Best Shocks For Grand Marquis: Compare Complete Sets and Individual Shocks
A strong choice for a Grand Marquis delivers the right fit for its model year and suspension setup, with the needed front, rear, or complete components included. These options suit owners replacing one shock, refreshing all four corners, or converting an air-suspension setup to conventional springs. Most listed full sets cover the 2003–2011 Grand Marquis, but one option targets 1995–2002 models, and another is specifically for vehicles with a police or taxi package.
The list also includes individual Monroe shocks and a rear-only conversion kit, so the products are not interchangeable by scope. Check your exact year, trim, and package before ordering; use the vehicle-fitment tool and verify whether you need a complete conversion or only replacement shocks.
For most owners of a 2003–2011 Grand Marquis needing front and rear components, KAX Complete Strut Set is the strongest match. It lists fitment for those model years and includes two front complete strut assemblies plus two rear shocks. Its two-year warranty is also specified.
If your car has a police or taxi package, choose a package-specific option instead; for a rear-only job or a single replacement shock, the corresponding narrower products may be more appropriate.
Our Top Picks
Best OverallCovers 2003–2011 Grand Marquis and includes two front complete strut assemblies plus two rear shocks, making it a broad all-four-corners option.
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Best 2004–2011 FitProvides two front complete strut assemblies and two rear shocks for Grand Marquis 2004–2011, with direct bolt-on fitment stated.
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Best Air ConversionComplete Struts Conversion Kit
Specifically replaces the 2003–2011 Grand Marquis air setup with front complete struts, rear gas shocks, and coil springs.
View on Amazon- Best Police Package Detroit Axle Police Package Kit
- Best Rear-Only Kit OREDY Rear Conversion Kit
Compare the Grand Marquis suspension options
| # | Product | Weight | Compatible with Vehicle Type | Buy |
|---|---|---|---|---|
| 1 | 1. KAX Complete Strut SetBest Overall | 44.2 lb | — | View on Amazon |
| 2 | 2. KAX 4-Piece SetBest 2004–2011 Fit | 44.2 lb | — | View on Amazon |
| 3 | 3. Complete Struts Conversion KitBest Air Conversion | 50 lb | Car | View on Amazon |
| 4 | 4. PHILTOP Complete AssemblyCoated-metal full suspension set | 44.2 lb | — | View on Amazon |
| 5 | 5. Detroit Axle Police Package KitBest Police Package | 68 lb | — | View on Amazon |
| 6 | 6. OREDY Rear Conversion KitBest Rear-Only Kit | 28.8 lb | — | View on Amazon |
| 7 | 7. Monroe Magnum Severe ServiceFleet-duty rear shock replacement | 7 lb | Car | View on Amazon |
| 8 | 8. Monroe OESpectrum ShockSingle OE-style rear shock | 4 lb | Car, Truck | View on Amazon |
| 9 | 9. PM Auto Shock SetEarlier-model Grand Marquis set | 15 lb | Car | View on Amazon |
| 10 | 10. Detroit Axle Crown Victoria SetNon-fleet Crown Victoria refresh | 49.7 lb | Car | View on Amazon |
Detailed Reviews: Best Shocks For Grand Marquis

#1 · Best Overall
1. KAX Complete Strut Set
- Weight: 44.2 lb
Best for: Four-corner assembly replacement.
Why it ranks #1: Covers 2003–2011 Grand Marquis and includes two front complete strut assemblies plus two rear shocks, making it a broad all-four-corners option.
KAX supplies two complete front strut assemblies and two rear shock absorbers in one package, letting owners address all four listed suspension positions together. The kit covers 2003–2011 Mercury Grand Marquis, Ford Crown Victoria, and Lincoln Town Car, making its multi-vehicle fitment and complete front-and-rear grouping its defining strengths.
The two front complete strut assemblies arrive alongside two rear shock absorbers, so buyers can plan a four-position replacement from a single listed package rather than piecing together front and rear parts. KAX supplies a broad set of OE replacement references, which can help compare the kit with existing application information. Compatibility is stated for 2003–2011 Grand Marquis, Town Car, and Crown Victoria. The listing names the included component types, but does not state that rear springs or rear strut assemblies are included.
- Two front complete strut assemblies included
- Two rear shock absorbers included
- Listed for 2003–2011 Grand Marquis
- Also listed for Crown Victoria and Town Car
- The package lists rear shocks, not rear complete strut assemblies.
Skip it if you require rear complete strut assemblies as well as fronts; the Complete Struts conversion kit lists front and rear struts, shocks, and coil springs.
This suits a Grand Marquis owner planning front strut and rear shock replacement together across the listed 2003–2011 years. Check that rear shock absorbers meet your repair scope; the supplied contents do not describe rear complete assemblies or springs.
Full product details
| Brand | KAX |
|---|---|
| Included Components | 2x Front Complete Strut Assembly – 171346 2x Rear Shock Absorber – 5993 |
| Item Weight | 44.2 pounds |
| Manufacturer | KAX |
| Part Number | 9947SAA18MKUS |
| Manufacturer Warranty Description | 2 Years |
| Model Number | struts |
| Style | Modern |
| Style Name | Modern |
Why it ranks #2: Provides two front complete strut assemblies and two rear shocks for Grand Marquis 2004–2011, with direct bolt-on fitment stated.
KAX pairs two complete front strut assemblies with two rear shocks in a four-piece set advertised for direct bolt-on installation without modifications. Its stated Mercury Grand Marquis range is 2004–2011, giving later-model owners a complete front-and-rear package with OE reference numbers for application comparison.
The front complete assemblies and rear shock absorbers cover both ends of the listed Grand Marquis, reducing the need to source separate front and rear product listings. KAX describes the set as direct bolt-on with no modifications required, which supports a more straightforward installation plan when the application matches. The supplied OE references give buyers identifiers to compare with replacement-part information. Fitment is stated for 2004–2011 Mercury Grand Marquis, and the included rear components are shocks rather than rear complete strut assemblies.
- Two front complete strut assemblies included
- Two rear shock absorbers included
- Direct bolt-on installation stated
- Listed for 2004–2011 Mercury Grand Marquis
- Rear components are shock absorbers, not complete rear strut assemblies.
Skip it if you require a 2003 Grand Marquis application; KAX's 9947SAA18MKUS set lists Grand Marquis model years 2003–2011.
For a 2004–2011 Grand Marquis owner seeking front complete struts and rear shocks together, this KAX set offers a direct-bolt-on approach. Its listed range starts at 2004, and rear complete assemblies are not among the included parts.
Full product details
| Brand | KAX |
|---|---|
| Included Components | 2x Front Complete Strut Assembly – 171346 2x Rear Shock Absorber – 5993 |
| Item Weight | 44.2 pounds |
| Manufacturer | KAX |
| Part Number | 9329SAA18MTUS |
| Manufacturer Warranty Description | 2 Years |
| Material | Steel |
| Model Number | 171346*2/5993*2 |
Listed on Amazon as: KAX 4PCS Complete Strut Shock Absorber Full Set Front & Rear for Mercury Grand Marquis 2004-2011, OE Replacement, Heavy Duty, Nitrogen Charged, Direct Bolt-On Fit
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#3 · Best Air Conversion
3. Complete Struts Conversion Kit
- Weight: 50 lb
- Compatible with Vehicle Type: Car
Best for: Air-suspension conversion project.
Why it ranks #3: Specifically replaces the 2003–2011 Grand Marquis air setup with front complete struts, rear gas shocks, and coil springs.
This Complete Struts package replaces an air-suspension setup with front quick struts and rear gas shocks and coil springs, making conversion the key reason to consider it. It is listed for 2003–2011 Mercury Grand Marquis and fits original mounting points without modifications, according to the supplied product facts.
The front quick complete struts and rear gas shocks with coil springs combine the conversion components in one kit, which can simplify planning a change from the vehicle's current air-suspension system. The seller says the conversion fits original mounting points without modifications, helping keep the installation tied to the existing locations. An alignment is needed after installing the new struts to restore factory suspension configuration, so buyers should include that step in their repair workflow. The listing specifically covers 2003–2011 Grand Marquis.
- Front quick complete struts included
- Rear gas shocks and coil springs included
- Conversion kit for current air suspension
- Fits original mounting points without modifications
- An alignment is needed after strut installation.
Skip it if you want shocks only and do not need an air-suspension conversion; the Monroe OESpectrum 5993 is a single replacement shock.
Consider this for a 2003–2011 Grand Marquis owner converting the listed air-suspension system to struts, shocks, and coil springs. The kit uses original mounting points, but installation planning should include the required alignment afterward.
Full product details
| Brand | Complete Struts |
|---|---|
| Compatible with Vehicle Type | Car |
| Item Weight | 50 pounds |
| Manufacturer | Complete Struts |
| Part Number | 4-FA800C-FC993C-002 |
| Manufacturer Warranty Description | Limited 1 Year Warranty |
| Material | Metal |
| Model Number | 4-FA800C-FC993C-002 |
| Style | Modern |
| Style Name | Modern |
Listed on Amazon as: Front Quick Complete Struts Assembly and Rear Gas Shocks Absorbers & Coil Springs Conversion Kit Replacement for 2003-2011 Mercury Grand Marquis (Set of 4)
View on AmazonWhy it ranks #4: Lists Grand Marquis fitment for 2004–2011 and includes a front-and-rear assembly, though its stated vehicle coverage is narrower than the top-ranked sets.
PHILTOP combines front struts and rear shocks in a complete assembly package, with electro-coating and anti-corrosion, anti-oxidation claims distinguishing its construction details. Its fitment list covers 2004–2011 Grand Marquis, making it a four-position option for owners whose model year falls within that stated range.
The package pairs front struts and rear shocks, allowing a buyer to plan work at both ends from one listed assembly set. PHILTOP says high silicon content resists metal fatigue, while electro-coating is intended to resist corrosion and oxidation; these material and finish details are relevant when considering long-term component exposure. Its stated fitment covers 2004–2011 Grand Marquis, with specified Town Car and Crown Victoria ranges as well. Confirm the exact vehicle application against the supplied fitment information before planning installation.
- Front struts and rear shocks in one assembly package
- Listed for 2004–2011 Mercury Grand Marquis
- High silicon content stated to resist metal fatigue
- Electro-coating stated to resist corrosion and oxidation
- Grand Marquis fitment begins at 2004, not 2003.
Skip it if you have a 2003 Grand Marquis; KAX's 9947SAA18MKUS kit lists Grand Marquis applications from 2003 through 2011.
PHILTOP suits a 2004–2011 Grand Marquis owner looking to replace front struts and rear shocks together, with stated fatigue and corrosion-resistance features. Its Grand Marquis coverage starts at 2004, so earlier models fall outside the listed range.
Full product details
| Brand | PHILTOP |
|---|---|
| Item Weight | 44.2 pounds |
| Item model number | 171346 5993 |
| Manufacturer | PHILTOP |
| Part Number | 3327SAA18MZUS |
| Model | OE |
| Dimensions | 22.64 x 11.81 x 10.43 inches |
Listed on Amazon as: PHILTOP Front Rear Struts And Shocks Complete Assembly 171346 5993 For 2004-2011 Grand Marquis 2003-2006 2008-2011 Town Car 2003-2011 Crown Victoria
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#5 · Best Police Package
5. Detroit Axle Police Package Kit
- Weight: 68 lb
Best for: Police and taxi package coverage.
Why it ranks #5: Explicitly covers 2003–2011 Grand Marquis with police or taxi packages and includes front and rear strut assemblies with coil springs.
Detroit Axle's eight-piece kit explicitly covers Police Interceptor and taxi-package applications, including Grand Marquis models with Police or Taxi packages. That coverage distinguishes it from civilian-only listings. The package combines front and rear struts with coil springs and sway bar end links, giving fleet-package owners a broad set of replacement components.
The kit includes two front struts with coil springs, two rear struts with coil springs, and four sway bar end links, so several listed suspension parts arrive together for a broader installation plan. Detroit Axle specifies 2003–2011 Crown Victoria Police Interceptor with Taxi Package and Grand Marquis with Police or Taxi Package. The listing says the strut-shock assemblies are complete and ready for installation with no additional work, which can reduce assembly steps. Verify the package-specific application against the vehicle before ordering.
- Eight-piece suspension kit
- Front and rear struts include coil springs
- Four front and rear sway bar end links included
- Explicitly lists Grand Marquis Police or Taxi packages
- Fitment is specified for Police or Taxi package applications.
Skip it if you own a civilian Grand Marquis without a Police or Taxi package; the KAX 9947SAA18MKUS kit lists Grand Marquis without that package restriction.
This package is aimed at owners refreshing a 2003–2011 Police or Taxi package Grand Marquis, or a listed Crown Victoria Police Interceptor with Taxi Package. Its broad component bundle is not the stated fitment for civilian Grand Marquis models.
Full product details
| Brand | Detroit Axle |
|---|---|
| Item Weight | 68 pounds |
| Item model number | 8QS47391 |
| Manufacturer | Detroit Axle |
| Part Number | 8QS47391 |
| Dimensions | 24 x 8 x 18 inches |
Listed on Amazon as: Detroit Axle – 8pc Struts Kit for 2003-2011 Ford Crown Victoria
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#6 · Best Rear-Only Kit
6. OREDY Rear Conversion Kit
- Weight: 28.8 lb
Best for: Preassembled rear conversion pair.
Why it ranks #6: Fits 2003–2011 Grand Marquis and includes two pre-assembled rear shock and coil-spring units, suited to a rear-only replacement.
OREDY supplies two fully pre-assembled rear shock, air-spring, and coil-spring sets, making this a focused rear conversion option rather than a four-corner kit. The listed fitment covers 2003–2011 Mercury Grand Marquis, Ford Crown Victoria, and Lincoln Town Car, with preassembly intended to simplify installation.
The two rear shock-strut air-spring coil-spring sets arrive fully pre-assembled, which can reduce the assembly work required before fitting them. OREDY says the shock absorber meets OE standards and is intended to improve ride comfort, while the application list covers the 2003–2011 Grand Marquis and two related vehicle lines. Because the package is rear-only, it suits buyers addressing those positions, not someone seeking a complete front-and-rear replacement. The listed fitment tool is also noted for checking the vehicle application.
- Two rear shock, air-spring, and coil-spring sets included
- Fully pre-assembled for installation
- Listed for 2003–2011 Mercury Grand Marquis
- Also listed for Crown Victoria and Town Car
- Rear-only package; front suspension components are not included.
Skip it if you need front and rear suspension components together; PHILTOP's 171346/5993 assembly package lists front and rear parts.
Choose this for a 2003–2011 Grand Marquis owner replacing the rear shock and spring assemblies with preassembled units. It does not cover the front, so buyers planning a four-corner suspension refresh will need additional components.
Full product details
| Brand | OREDY |
|---|---|
| Item Weight | 28.8 pounds |
| Item model number | 171651OR |
| Manufacturer | OREDY |
| Part Number | 171651OR |
| Model | 171651OR |
| Dimensions | 18.11 x 14.17 x 7.77 inches |
Listed on Amazon as: OREDY Rear Shocks for Crown Victoria Town Car Grand Marquis Converion Kit
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#7
7. Monroe Magnum Severe Service
- Weight: 7 lb
- Compatible with Vehicle Type: Car
Best for: Fleet-duty rear shock replacement.
Why it ranks #7: Lists Grand Marquis compatibility across 2003–2011 and is designed for severe-service use, but the listing describes an individual shock absorber.
Monroe identifies this Magnum Severe Service shock for emergency, municipal, fleet, and jobsite vehicles, making its heavy-duty use case the clearest differentiator. Its listed compatibility includes 2003–2011 Mercury Grand Marquis, alongside related Ford and Lincoln applications, for buyers prioritizing a single shock replacement rather than a complete set.
Monroe says enhanced components are intended to handle tough environments and deliver added control and long service life, which suits a Grand Marquis used for demanding fleet or jobsite duties. The fitment list also covers Crown Victoria and Town Car applications, offering a shared option across those listed vehicles. This is one shock absorber, not a full-vehicle kit, so a complete suspension refresh requires separately sourcing additional components. The included dust shield is a useful supplied component to note when planning replacement.
- Magnum Severe Service construction
- Listed for 2003–2011 Mercury Grand Marquis
- Intended for emergency, municipal, fleet, and jobsite use
- Dust shield included
- Sold as a single shock absorber, not a complete set.
Skip it if you need front and rear components together; the KAX 171346/5993 four-piece set includes front assemblies and rear shocks.
Choose this Monroe for a listed Grand Marquis used in fleet, municipal, or similarly demanding service when replacing an individual shock. It is not a four-corner kit, so buyers planning a full-vehicle refresh need to source the remaining suspension components separately.
Full product details
| Brand | Monroe |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Dust Shield; Parts Pack(s); |
| Item Weight | 7 pounds |
| Manufacturer | Monroe Shocks & Struts |
| Part Number | 550055 |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Material | Iron |
| Model Number | 550055 |
| Style | Modern |
| Style Name | Modern |
Listed on Amazon as: Monroe Magnum Severe Service 550055 Suspension Shock Absorber for Mercury Grand Marquis
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#8
8. Monroe OESpectrum Shock
- Weight: 4 lb
- Compatible with Vehicle Type: Car, Truck
Best for: Single OE-style rear shock.
Why it ranks #8: Fits Grand Marquis 2003–2011 and is designed to restore factory drivability, but the listing is for an individual shock rather than a full set.
Monroe's OESpectrum shock is presented as a single replacement intended to restore factory drivability while providing handling precision and control. Its listed compatibility includes 2003–2011 Mercury Grand Marquis, making it an option for buyers replacing an individual shock rather than purchasing a complete front-and-rear kit.
Monroe describes its OESpectrum passenger-car shocks as filtering noise, vibration, and harshness while restoring factory drivability, linking the product's intended ride behavior to a practical replacement use. Application-specific valving technologies are also identified in the supplied product facts. Compatibility includes 2003–2011 Grand Marquis, as well as listed Crown Victoria and Town Car applications. This is one shock absorber with a dust shield included, so a buyer refreshing multiple positions must source the required additional units separately.
- OESpectrum passenger-car shock absorber
- Listed for 2003–2011 Mercury Grand Marquis
- Intended to filter noise, vibration, and harshness
- Dust shield included
- Single shock absorber; multiple-position replacement needs additional units.
Skip it if you need a complete front-and-rear package; PHILTOP's 171346/5993 assembly set lists front struts and rear shocks together.
This Monroe suits a Grand Marquis owner replacing an individual shock and seeking the stated OESpectrum focus on drivability and filtering harshness. It is not a multi-position kit, so plan additional parts for a broader suspension refresh.
Full product details
| Brand | Monroe |
|---|---|
| Compatible with Vehicle Type | Car, Truck |
| Included Components | Dust Shield; Parts Pack(s); |
| Item Weight | 4 pounds |
| Manufacturer | Monroe Shocks & Struts |
| Part Number | 5993 |
| Manufacturer Warranty Description | Please contact us if you experience any issues within 30 days of receipt. |
| Model Number | 5993 |
| Style | Active |
| Style Name | Active |
Listed on Amazon as: Monroe OESpectrum 5993 Suspension Shock Absorber for Mercury Grand Marquis
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#9
9. PM Auto Shock Set
- Weight: 15 lb
- Compatible with Vehicle Type: Car
Best for: Earlier-model Grand Marquis set.
Why it ranks #9: Offers a set of four for 1995–2002 Grand Marquis, making it a direct option for earlier models but not the later years covered by most listings.
PM Auto lists this four-piece front-and-rear shock set for 1995–2002 Mercury Grand Marquis, reaching model years beyond the 2003–2011 coverage common to many alternatives here. Its quick-strut installation notes emphasize avoiding disassembly of the existing strut assembly and compression of coil springs.
PM Auto describes complete strut-coil spring assemblies as easy and safe to install, with no need to take apart the existing strut assembly, compress coil springs, or use specialized tools. Those installation details may make the job more approachable for buyers handling the listed 1995–2002 Grand Marquis application. The listing also says the bare struts and shock absorbers improve steering, handling, and braking ability. It is a four-piece front-and-rear set, but its stated Grand Marquis range ends at 2002.
- Set of four front-and-rear shock components
- Listed for 1995–2002 Mercury Grand Marquis
- Quick-strut installation avoids compressing coil springs
- No specialized tools specified for installation
- Fitment stops at the 2002 Grand Marquis model year.
Skip it if you have a 2003–2011 Grand Marquis; KAX 171346/5993 is listed for those later model years.
This set fits the earlier 1995–2002 Grand Marquis range and emphasizes a quick-strut process without spring compression or specialized tools. Owners of 2003–2011 models should select a product listing those later years instead.
Full product details
| Brand | PM Auto |
|---|---|
| Compatible with Vehicle Type | Car |
| Included Components | Shock Set |
| Item Weight | 15 pounds |
| Manufacturer | PM Auto |
| Part Number | D403351 |
| Manufacturer Warranty Description | Limited Lifetime |
| Model Number | BD403351 |
| Style | all-weather |
| Style Name | all-weather |
Listed on Amazon as: PM Auto Set of 4 Front-Rear Shock Absorber Compatible With 1995-2002 Mercury Grand Marquis
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#10
10. Detroit Axle Crown Victoria Set
- Weight: 49.7 lb
- Compatible with Vehicle Type: Car
Best for: Non-fleet Crown Victoria refresh.
Why it ranks #10: The listing specifies 2003–2011 Crown Victoria models without police or taxi packages, but does not establish Grand Marquis fitment.
A four-piece strut-and-shock package covers the 2003–2011 Ford Crown Victoria applications listed by Detroit Axle, giving owners a single kit for a broader suspension refresh. Its defining boundary matters: the supplied fitment specifies non-police, non-taxi models, so it is not the package to choose for fleet-package vehicles.
The four-piece format groups struts and shocks in one purchase, which can simplify sourcing when refreshing the listed Crown Victoria suspension. Detroit Axle's application notes span 2003–2011 model years, but specify Base, LX, LX Sport, S, and Special Edition trims only where stated and exclude Police/Taxi models. That makes the fitment detail especially important for buyers comparing civilian and fleet cars. The listing does not specify installation hardware or a complete front-and-rear component breakdown, so check the package details before planning the job.
- Four-piece strut-and-shock package
- Listed for 2003–2011 Ford Crown Victoria applications
- Includes fitment details for several civilian trims
- Detroit Axle replacement suspension components
- Not listed for Police or Taxi package models.
Skip it if you have a Police Interceptor or taxi-package Crown Victoria; this listing expressly excludes those applications.
A civilian Crown Victoria owner seeking a multi-piece suspension replacement may find this package convenient. Its stated fitment excludes Police and Taxi models, and the listing does not establish Grand Marquis compatibility, so those buyers should choose a product with explicit coverage.
Full product details
| Brand | Detroit Axle |
|---|---|
| Compatible with Vehicle Type | Car |
| Item Weight | 49.7 pounds |
| Manufacturer | Detroit Axle |
| Part Number | 10146-4A |
| Model Number | 10146-4A |
| Style | Modern |
| Style Name | Modern |
Listed on Amazon as: Detroit Axle – 4pc Struts Shocks Absorbers for 03-11 Ford Crown Victoria
View on AmazonCheck suspension type before choosing a kit
The key compatibility trap is buying a conventional spring conversion when your car needs a different suspension configuration. Complete Struts Conversion Kit is explicitly described as an air-to-complete-struts, shocks, and coil-springs conversion for 2003–2011 Grand Marquis; OREDY Rear Conversion Kit likewise includes rear shocks and coil springs. By contrast, the KAX Complete Strut Set lists front strut assemblies and rear shocks, but its supplied information does not identify it as an air-suspension conversion.
Confirm what is currently installed and match the product to that setup rather than assuming every four-piece kit replaces the same parts. Package matters too: Detroit Axle Police Package Kit specifically names Grand Marquis with police or taxi packages, while Detroit Axle Crown Victoria Set excludes those configurations and does not establish Marquis fitment.
When in doubt, check the vehicle-fitment tool and the car’s exact trim and suspension.
How to Choose Grand Marquis Shocks
Model year and package fit
Start with exact model year and package, not just the Grand Marquis name. Several full-set listings cover 2003–2011, including KAX Complete Strut Set and Complete Struts Conversion Kit. KAX 4-Piece Set and PHILTOP Complete Assembly specify 2004–2011 Grand Marquis, while PM Auto Shock Set is for 1995–2002.
Detroit Axle Police Package Kit specifies 2003–2011 cars with a police or taxi package. That difference can decide the purchase before comparing features: later-model owners have several broad options, earlier-model owners should focus on the PM Auto listing, and police/taxi-package owners should verify the dedicated package listing rather than infer fitment from a Crown Victoria application.
Replacement coverage and included parts
Choose the kit scope to match the repair: a single shock, rear pair, or front-and-rear refresh. KAX Complete Strut Set includes two front complete strut assemblies and two rear shocks; the similarly configured KAX 4-Piece Set lists the same component counts. OREDY Rear Conversion Kit includes two rear shock-and-coil-spring units, while each Monroe listing is an individual shock absorber.
Detroit Axle Police Package Kit adds front and rear coil-spring strut assemblies and four sway-bar end links. A complete set suits an all-corners job, a rear-only kit suits a targeted rear replacement, and an individual shock is for a narrower repair.
Confirm the quantity needed before ordering, especially where the product listing describes a single absorber.
Suspension conversion and assembly type
Look for an explicit conversion description if you are replacing air suspension with coil springs. Complete Struts Conversion Kit names an air-to-complete-struts and coil-springs conversion and says it fits original mounting points without modifications. OREDY Rear Conversion Kit is a rear-only set with coil springs and is described as pre-assembled.
Other listed complete sets include front strut assemblies and rear shocks, but their supplied details do not all identify an air-to-coil conversion. Buyers seeking to replace an existing air system should favor a product that clearly states that purpose; buyers replacing conventional components can compare the broader four-piece kits after checking fitment.
Do not treat “complete set” alone as proof that a kit converts every suspension configuration.
Which Grand Marquis shock option should you choose?
For a 2003–2011 Grand Marquis needing all four corners, choose KAX Complete Strut Set: it explicitly covers those years and includes front complete strut assemblies and rear shocks. If the car is a 2004–2011 model, KAX 4-Piece Set is another direct-fit full set. For a confirmed air-suspension conversion, consider Complete Struts Conversion Kit; for a rear-only spring-and-shock replacement, choose OREDY Rear Conversion Kit.
Owners with police or taxi packages should check Detroit Axle Police Package Kit, which explicitly lists those configurations. For earlier 1995–2002 cars, PM Auto Shock Set is the matching year-range option.
If replacing only an individual absorber, compare Monroe Magnum Severe Service and Monroe OESpectrum Shock, and verify the vehicle fit before purchase.
Related Buying Guides
Frequently Asked Questions
How can I tell whether my Grand Marquis has air suspension or conventional springs?
Check the rear suspension for air springs, air lines, and an air compressor; conventional suspension uses coil springs instead. The owner’s manual or vehicle equipment information can also help confirm the setup. Verify the suspension type before ordering, especially if considering a conversion kit.
Should I replace shocks in pairs or replace all four at once?
Replace shocks in pairs on the same axle so both sides respond consistently. Replacing all four is reasonable when all are worn or when doing a complete suspension refresh, but it is not automatically necessary. Match the job to the condition of each component and the parts included in the selected set.
Does changing Grand Marquis struts or shocks require a wheel alignment?
An alignment check is prudent after replacing front strut assemblies, because their removal can affect wheel angles. Replacing rear shocks alone generally does not change front alignment, but inspect tire wear and steering behavior afterward. Follow the service procedure for your vehicle and arrange an alignment if angles are out of specification.
Which option should I consider for a single replacement shock?
Compare the Monroe Magnum Severe Service and Monroe OESpectrum shock options, then verify the exact vehicle fit before purchase. The listed titles identify individual shock absorbers, while complete sets serve broader replacement jobs. Confirm the position and application needed for your Grand Marquis rather than assuming the two shocks are interchangeable.
What should I choose for an air-suspension conversion or police package?
For a confirmed air-suspension conversion, consider the Complete Struts Conversion Kit; for a rear-only spring-and-shock replacement, consider the OREDY Rear Conversion Kit. If the car has a police or taxi package, check the Detroit Axle Police Package Kit and confirm its listed configuration matches your vehicle.
Final Words
For a 2003–2011 Grand Marquis needing both front and rear components, the KAX Complete Strut Set is the clearest match: it lists those years, includes front complete strut assemblies and rear shocks, and specifies a two-year warranty. Choose a package-specific option for police or taxi configurations. For earlier cars, rear-only work, a confirmed air-suspension conversion, or one absorber, select the narrower matching option and verify fitment before ordering.

