Best Exhaust For F350 Diesel: Compare 4-Inch and 5-Inch Options
A strong F350 diesel exhaust choice matches the truck’s engine, model-year range, cab and bed configuration, and required pipe diameter before you compare materials or installation details. The options here include 4-inch replacement pipes and kits for 6.7L Powerstroke trucks, a 5-inch system, narrower-fit muffler pipes, and parts for older 6.0L models. The maXpeedingrods kit covers several 6.7L Super Duty model years but excludes cab-and-chassis trucks and may need cutting for shorter configurations.
TEYOLIAO lists 304 stainless steel and a 3-year warranty, while other choices use 409 stainless steel. Check the stated fitment against your exact truck and confirm what is included; a similar engine or diameter alone does not guarantee the right replacement.
The maXpeedingrods 4.0-inch Kit is the strongest overall match for many F350 6.7L owners because it is listed for Super Duty trucks across a broad model-year range and specifies a 4.0-inch inlet with bolt-on installation. It does not fit cab-and-chassis trucks, and cutting may be needed for shorter wheelbase bed or cab configurations. Confirm your configuration before ordering.
For a listed 304 stainless steel option and a stated 3-year warranty, consider the TEYOLIAO 4-inch Pipes instead.
Our Top Picks
Best OverallListed for 6.7L F-250, F-350, and F-450 Super Duty pickups, with a 4.0-inch inlet and bolt-on installation; cab-and-chassis trucks are excluded.
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304 Stainless SteelCovers 6.7L Super Duty trucks across a broad model-year range and specifies 304 stainless steel, mandrel forming, and a 3-year warranty.
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Largest DiameterThe 5-inch option is listed for 6.7L Powerstroke trucks and describes mandrel-formed 409 stainless steel with smooth-radius bends.
View on Amazon- Muffler Pipe Set Generic 4-inch Muffler Set
Compare the F350 Exhaust Options
| # | Product | Material | Material Type | Installation Type | Buy |
|---|---|---|---|---|---|
| 1 | 1. maXpeedingrods 4.0-inch KitBest Overall | — | — | — | View on Amazon |
| 2 | 2. TEYOLIAO 4-inch Pipes304 Stainless Steel | Stainless Steel | Stainless Steel | — | View on Amazon |
| 3 | 3. Kucaruce 4-inch Pipe KitTurbo-junction replacement buyers | — | — | — | View on Amazon |
| 4 | 4. Generic 5-inch PipesLargest Diameter | Stainless Steel | Stainless Steel | — | View on Amazon |
| 5 | 5. SleYuYir 4-inch PipeDirect-fit 4-inch pipe buyers | Stainless Steel | Stainless Steel | Direct Fit | View on Amazon |
| 6 | 6. Generic 4-inch Muffler SetMuffler Pipe Set | Stainless Steel | Stainless Steel | Bolt-On | View on Amazon |
| 7 | 7. LELEHOKA Turbo Pipe2015–2019 catalyst-chamber buyers | Stainless Steel | Stainless Steel | Direct Bolt-on | View on Amazon |
| 8 | 8. SleYuYir 3.5-inch Pipe2003–2007 6.0L pipe buyers | Stainless Steel | Stainless Steel | Direct Fit | View on Amazon |
| 9 | 9. SleYuYir 6.0L Pipe Kit6.0L direct-fit kit buyers | Stainless Steel | Stainless Steel | Direct Fit | View on Amazon |
| 10 | 10. Flowmaster FlowFX Cat-BackGas Super Duty cat-back buyers | Stainless Steel | Stainless Steel | — | View on Amazon |
Detailed Reviews: Best Exhaust For F350 Diesel
Why it ranks #1: Listed for 6.7L F-250, F-350, and F-450 Super Duty pickups, with a 4.0-inch inlet and bolt-on installation; cab-and-chassis trucks are excluded.
Coverage for 2011–2023 F-250, F-350, and F-450 crew-cab short- and long-bed pickups gives this maXpeedingrods kit a broad stated application, enabling many 6.7L Powerstroke owners to consider a 4.0-inch replacement. Bolt-on installation and resistance to heat, corrosion, abrasion, and temperature extremes are also specified.
The 4.0-inch inlet and bolt-on installation are paired with a claim of straightforward installation without complicated work, helping frame this as a replacement kit rather than a custom-fabrication project. Its listed fitment includes crew-cab short-bed and long-bed Super Duty pickups from 2011–2023. The description explicitly excludes Cab & Chassis commercial-style trucks, and notes that cutting may be required for shorter wheelbase bed or cab configurations, important boundaries for installation planning.
- 4.0-inch inlet diameter
- Bolt-on installation
- Listed for 2011–2023 F-250, F-350, and F-450 6.7L pickups
- Specified resistance to corrosion, heat, abrasion, and temperature extremes
- Not compatible with Cab & Chassis commercial-style trucks.
Skip it if you drive a Cab & Chassis commercial truck; TEYOLIAO’s 2011–2023 Super Duty 6.7L pipe has a broader stated body-style listing.
This kit fits owners of listed 2011–2023 6.7L F-series crew-cab pickups wanting a 4-inch bolt-on replacement. Check the body style and wheelbase configuration: Cab & Chassis is excluded, and some configurations may require cutting.
Full product details
| Brand | maXpeedingrods |
|---|---|
| Item Weight | 12150 g |
| Manufacturer | maXpeedingrods |
| Part Number | AB34DJ |
Listed on Amazon as: maXpeedingrods 4.0" Exhaust Pipe Kit for Ford Powerstroke 6.7 Diesel F-series F-250, F-350 & F-450 Super Duty 2011-2023
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#2 · 304 Stainless Steel
2. TEYOLIAO 4-inch Pipes
- Material: Stainless Steel
- Material Type: Stainless Steel
Best for: Wide-year 304 stainless upgrade.
Why it ranks #2: Covers 6.7L Super Duty trucks across a broad model-year range and specifies 304 stainless steel, mandrel forming, and a 3-year warranty.
A stated 2011–2023 fitment gives this TEYOLIAO 4-inch exhaust pipe broader model-year coverage than many listed replacements, enabling owners across that range to consider one application. Its 304 stainless steel construction and polished finish add corrosion resistance, while the product description also identifies mandrel-formed tubing and a TIG-welded CNC flange.
The 304 stainless construction is described as corrosion-resistant in heat and humidity, a practical advantage for an exhaust component exposed to those conditions. Mandrel-formed tubing and a TIG-welded CNC flange are named in the description, connecting the pipe’s construction to its formed exhaust path and flange assembly. OE-style hangers are also specified for easier installation. The listed application spans 2011–2023 Super Duty 6.7L trucks, and the inlet diameter is 4 inches.
- Listed for 2011–2023 Super Duty 6.7L
- 304 stainless steel construction
- Mandrel-formed tubing with TIG-welded CNC flange
- OE-style hangers and 4-inch inlet
- The specified inlet diameter is 4 inches, not a larger-diameter option.
Skip it if you specifically want a 5-inch exhaust pipe; the Generic 2011–2023 5-inch 6.7L listing matches that diameter preference.
This suits 6.7L Super Duty owners seeking a 4-inch pipe with broad stated 2011–2023 coverage, 304 stainless, and OE-style hangers. Buyers seeking a 5-inch system should consider a different diameter.
Full product details
| Brand | TEYOLIAO |
|---|---|
| Included Components | Include all components shown in the first figure. |
| Manufacturer | TEYOLIAO |
| Part Number | TTY001076 |
| Manufacturer Warranty Description | 3-year warranty |
| Material | Stainless Steel |
| Model Number | 2011-2023 Super Duty 6.7L |
Listed on Amazon as: Exhaust Pipes For Ford 4" 2011-2023 Super Duty 6.7L Diesel,2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 Ford F250 F350 F450 Exhaust Header Manifold
View on AmazonWhy it ranks #3: Fits 6.7L F-350 trucks within its listed fitment range and uses 409 stainless steel, with a precision-flanged turbocharger-outlet connection.
A precision-flanged connection at the turbocharger outlet is the defining feature of this Kucaruce pipe kit, intended to support a leak-free junction. For owners of 2011–2019 F-250, F-350, or F-450 trucks with the 6.7L Powerstroke, the 4-inch replacement pipe pairs that fitment with 409 stainless steel construction.
The product description links its precision flange to maintaining boost pressure, reducing turbo lag, and helping prevent soot leakage near the turbocharger outlet. That makes the connection detail relevant beyond simply joining exhaust sections. Its 409 stainless steel construction is specified for resistance to high temperatures and corrosion, useful in an exhaust environment. The stated application covers 2011–2019 F-250, F-350, and F-450 6.7L trucks, so its fitment scope is specific rather than broad across model years.
- Precision-flanged turbocharger-outlet connection
- 4-inch exhaust pipe
- 409 stainless steel construction
- Listed for 2011–2019 F-250, F-350, and F-450 6.7L trucks
- Fitment is limited to 2011–2019 6.7L applications.
Skip it if you have a 2020–2023 6.7L truck; TEYOLIAO’s 2011–2023 4-inch pipe lists those model years.
This kit suits owners replacing the turbo-outlet exhaust pipe on a 2011–2019 6.7L Super Duty who value a flanged connection and stainless construction. Its stated fitment does not cover later model years.
Full product details
| Brand | Kucaruce |
|---|---|
| Manufacturer | Kucaruce |
| Part Number | D-YWD-496 |
Listed on Amazon as: Stainless Steel Exhaust Pipe Kit for 2011-2019 F250/F350/F450 6.7L 4" Powerstroke Diesel
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#4 · Largest Diameter
4. Generic 5-inch Pipes
- Material: Stainless Steel
- Material Type: Stainless Steel
Best for: 5-inch exhaust flow seekers.
Why it ranks #4: The 5-inch option is listed for 6.7L Powerstroke trucks and describes mandrel-formed 409 stainless steel with smooth-radius bends.
A 5-inch exhaust format sets this 2011–2023 6.7L Powerstroke pipe apart, giving buyers who specifically want a larger listed diameter an alternative to 4-inch replacements. The product also names 304 stainless construction, smooth-radius bends, and a TIG-welded CNC flange as construction details relevant to its exhaust path.
The listing describes a streamlined exhaust channel intended to reduce airflow resistance and promote faster exhaust expulsion, connecting its flow design to operation. Its additional description identifies mandrel-formed 409 stainless steel, smooth-radius bends, and a TIG-welded CNC flange; the material and formed bends speak to construction, while the flange specifies a connection detail. The stated application is 2011–2023 6.7L Powerstroke, and the defining size is 5 inches.
- 5-inch exhaust size
- Listed for 2011–2023 6.7L Powerstroke
- Mandrel-formed 409 stainless steel
- Smooth-radius bends and TIG-welded CNC flange
- The 5-inch diameter is not a match for buyers seeking a 4-inch replacement.
Skip it if you need a 4-inch pipe; TEYOLIAO’s 2011–2023 Super Duty 6.7L listing specifies a 4-inch inlet.
This option suits 6.7L Powerstroke owners seeking a 5-inch exhaust pipe across the stated 2011–2023 range, with formed bends and stainless construction. Its larger diameter is the key boundary for buyers replacing a 4-inch setup.
Full product details
| Brand | Generic |
|---|---|
| Included Components | Include all components shown in the first figure. |
| Manufacturer | TEYOLIAO |
| Part Number | TTY001271 |
| Manufacturer Warranty Description | 3-year warranty |
| Material | Stainless Steel |
| Model Number | 2011-2023 5" 6.7L POWERSTROKE |
Listed on Amazon as: Exhaust Pipes For FORD 5" 2011-2023 6.7L POWERSTROKE Diesel
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#5
5. SleYuYir 4-inch Pipe
- Material: Stainless Steel
- Material Type: Stainless Steel
- Installation Type: Direct Fit
Best for: Direct-fit 4-inch pipe buyers.
Why it ranks #5: A direct-fit 4-inch stainless steel replacement listed for 6.7L F-350 trucks in its fitment range, though the listing describes a pipe rather than a kit.
A direct-fit 4-inch replacement pipe is the central appeal of SleYuYir’s exhaust part, enabling owners of specified 2011–2019 Ford F-250, F-350, and F-450 6.7L Powerstroke trucks to replace a pipe without a stated need for extensive modifications. Stainless steel construction is also specified for high-temperature and harsh-condition use.
The direct-fit installation type and secure, leak-free connection claim point toward a replacement workflow centered on fitting the listed pipe rather than adapting a differently sized part. SleYuYir identifies a 4-inch diameter and stainless steel material, with construction described as able to withstand high exhaust temperatures and harsh conditions. The listed vehicle range is 2011–2019 F-250, F-350, and F-450 6.7L Powerstroke, making year and engine the key fitment boundaries to check.
- 4-inch pipe diameter
- Stainless steel material
- Direct-fit replacement installation
- Listed for 2011–2019 F-250, F-350, and F-450 6.7L Powerstroke
- The included component is a pipe, not a complete exhaust kit.
Skip it if you need a complete exhaust kit rather than one pipe; maXpeedingrods’ 4.0-inch kit lists a broader 2011–2023 application.
Choose this SleYuYir pipe for a listed 2011–2019 6.7L F-250, F-350, or F-450 replacement where direct-fit installation matters. The supplied contents identify one pipe, so it is not presented as a full system.
Full product details
| Brand | SleYuYir |
|---|---|
| Color | Silver |
| Compatible with Vehicle Type | Car |
| Included Components | Pipe |
| Installation Type | Direct Fit |
| Item Dimensions L x W | 30"L x 10"W |
| Manufacturer | SleYuYir |
| Part Number | Pipe |
| Manufacturer Warranty Description | 1 |
| Material | Stainless Steel |
| Model Number | Pipe |
Listed on Amazon as: Exhaust 4" Pipe Compatible with Ford F250 F350 F450 6.7L 2011-2019 Powerstroke
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#6 · Muffler Pipe Set
6. Generic 4-inch Muffler Set
- Material: Stainless Steel
- Material Type: Stainless Steel
- Installation Type: Bolt-On
Best for: 2011–2017 muffler-pipe replacement.
Why it ranks #6: Includes two muffler pipes for 6.7L F-350 trucks in its listed fitment range, with 409 stainless steel and direct bolt-on installation.
Two exhaust muffler pipes are included in this 4-inch 409 stainless set, giving owners of listed 2011–2017 F-250 and F-350 6.7L Super Duty trucks a paired replacement option. Its direct bolt-on fitment is described as requiring no modifications, making installation approach a central part of the product’s appeal.
The direct bolt-on design is specified for installation without modifications, which can simplify replacement planning compared with a setup requiring fabrication. The included pair of muffler pipes means the package is not just a single pipe, while the 4-inch size and 409 stainless construction define its core configuration. The fitment listing covers 2011–2017 F-250 and F-350 Super Duty trucks with 6.7L Powerstroke engines; it does not list F-450 or later model years.
- Includes two exhaust muffler pipes
- 4-inch configuration
- 409 stainless steel construction
- Direct bolt-on fitment without modifications stated
- Stated fitment ends at 2017 and covers F-250 and F-350 only.
Skip it if you have a 2018–2023 6.7L F-350; maXpeedingrods’ 2011–2023 4.0-inch kit lists F-350 coverage.
This set suits owners of listed 2011–2017 F-250 or F-350 6.7L trucks who want paired muffler pipes and a direct bolt-on approach. Its stated fitment is narrower than later-year Super Duty applications.
Full product details
| Brand | Generic |
|---|---|
| Color | Silver |
| Compatible with Vehicle Type | 2011 Ford F-250 Super Duty 6.7l Powerstroke Diesel, 2011 Ford F-350 Super Duty 6.7l Powerstroke Diesel, 2012 Ford F-250 Super Duty 6.7l Powerstroke Diesel, 2012 Ford F-350 Super Duty 6.7l Powerstroke Diesel, 2013 Ford F-250 Super Duty 6.7l Powerstroke Diesel, 2014 Ford F-250 Super Duty 6.7l Powerstr |
| Included Components | Exhaust Muffler Pipe 1, Exhaust Muffler Pipe 2 |
| Installation Type | Bolt-On |
| Item Dimensions L x W | 4"L x 4"W |
| Manufacturer | Aftermarket |
| Part Number | u1063UB35TI14 |
| Manufacturer Warranty Description | 1year |
| Material | Stainless Steel |
| Model Number | u1063UB35TI14 |
Listed on Amazon as: 4 Inch 409 Steel Exhaust Muffler Pipe Set Aftermarket Bolt-On Replacement Compatible with 2011-2017 Ford F-250 F-350 Super Duty 6.7L Powerstroke Diesel Trucks
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#7
7. LELEHOKA Turbo Pipe
- Material: Stainless Steel
- Material Type: Stainless Steel
- Installation Type: Direct Bolt-on
Best for: 2015–2019 catalyst-chamber buyers.
Why it ranks #7: Lists 6.7L F-350 fitment for a narrower model-year range and direct bolt-on installation, but its specifications contain conflicting vehicle details.
An extended catalyst chamber distinguishes this LELEHOKA turbo diesel exhaust pipe, with the feature described as boosting efficiency. The listing names 2015–2019 Ford F-250, F-350, F-450, and F-550 trucks with the 6.7L diesel, giving owners in that stated range a direct-bolt-on stainless replacement option.
The extended catalyst chamber is the most specific functional feature provided, and the listing connects it to boosted efficiency without quantifying the change. Stainless steel construction and a rugged build are presented as durability measures for the exhaust application. Direct bolt-on installation supports a replacement workflow using the stated mounting approach. The described vehicle fitment is 2015–2019 Ford F-250, F-350, F-450, and F-550 6.7L diesel, so model year and engine define its stated scope.
- Extended catalyst chamber
- Stainless steel construction
- Direct bolt-on installation type
- Listed for 2015–2019 F-250, F-350, F-450, and F-550 6.7L diesel
- Its stated Ford fitment is limited to 2015–2019 model years.
Skip it if you own a 2020–2023 6.7L Super Duty; TEYOLIAO’s 4-inch pipe lists coverage through 2023.
This pipe is for a 2015–2019 6.7L Ford Super Duty owner prioritizing the listed catalyst chamber and bolt-on installation. Its stated Ford year range ends in 2019, so later trucks fall outside that range.
Full product details
| Brand | LELEHOKA |
|---|---|
| Color | Silver |
| Compatible with Vehicle Type | Ram 2500 |
| Included Components | exhaust pipe |
| Installation Type | Direct Bolt-on |
| Item Dimensions L x W | 41"L x 8.27"W |
| Manufacturer | LELEHOKA |
| Part Number | 111566 |
| Manufacturer Warranty Description | 1 year |
| Material | Stainless Steel |
| Model Number | Fit for 2011-2015 6.6 Duramax Diesel |
Listed on Amazon as: Turbo Diesel Exhaust Pipe fit for 2015-2019 Ford F250 F350 F450 F550 6.7L Diesel
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#8
8. SleYuYir 3.5-inch Pipe
- Material: Stainless Steel
- Material Type: Stainless Steel
- Installation Type: Direct Fit
Best for: 2003–2007 6.0L pipe buyers.
Why it ranks #8: Fits the older 6.0L F-350 Powerstroke application listed and offers a 3.5-inch stainless steel direct-fit pipe, not a 6.7L replacement.
A 3.5-inch diameter defines this SleYuYir exhaust pipe, which is listed for 2003–2007 Ford F-250 and F-350 trucks with the 6.0L Powerstroke diesel turbo. Stainless steel construction and direct-fit installation are specified, offering a simple replacement format for owners whose engine and model years match that application.
The 3.5-inch size is the key specification for matching this pipe to a replacement need, while its direct-fit installation type points to a vehicle-specific rather than universal part. Stainless steel is the listed material. SleYuYir identifies compatibility with 2003–2007 F-250 and F-350 6.0L Powerstroke diesel turbo trucks, a much older engine application than current 6.7L Super Duty models, so engine and year are decisive boundaries.
- 3.5-inch pipe diameter
- Stainless steel material
- Direct-fit installation type
- Listed for 2003–2007 F-250 and F-350 6.0L Powerstroke diesel turbo
- This pipe is for 6.0L applications, not 6.7L Powerstroke trucks.
Skip it if you have a 6.7L F-350; Kucaruce’s 2011–2019 6.7L replacement pipe lists that engine and truck range.
This pipe suits an owner of a 2003–2007 F-250 or F-350 with the listed 6.0L Powerstroke diesel turbo seeking a 3.5-inch direct-fit replacement. It is not listed for 6.7L trucks.
Full product details
| Brand | SleYuYir |
|---|---|
| Color | Silver |
| Compatible with Vehicle Type | Car |
| Included Components | Pipe |
| Installation Type | Direct Fit |
| Item Dimensions L x W | 28"L x 10"W |
| Manufacturer | SleYuYir |
| Part Number | Pipe |
| Manufacturer Warranty Description | 1 |
| Material | Stainless Steel |
| Model Number | Pipe |
Listed on Amazon as: 3.5" Exhaust Pipe Compatible with Ford F250 F350 6.0L 2003-2007 Powerstroke Diesel Turbo
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#9
9. SleYuYir 6.0L Pipe Kit
- Material: Stainless Steel
- Material Type: Stainless Steel
- Installation Type: Direct Fit
Best for: 6.0L direct-fit kit buyers.
Why it ranks #9: A 409 stainless steel direct-fit kit for the listed older 6.0L F-350 Powerstroke application, making it unsuitable for 6.7L trucks.
Original exhaust routing and mounting-point matching are the defining claims for this SleYuYir kit, supporting a drop-in replacement workflow on listed 2003–2007 Ford F-250 and F-350 Powerstroke 6.0L trucks. Its 409 stainless steel construction is specified for corrosion resistance and durability under extreme exhaust conditions.
The direct-fit replacement is described as matching original routing and mounting points, a practical detail for buyers wanting to follow the truck’s existing exhaust path. SleYuYir also identifies 409 stainless steel, connecting the material choice to corrosion resistance in harsh exhaust conditions. Fitment is specified for 2003–2007 F-250 and F-350 Powerstroke 6.0L models. The listing names the included component as an exhaust pipe kit but does not specify its pipe diameter.
- Direct-fit replacement design
- Matches original exhaust routing and mounting points
- 409 stainless steel construction
- Listed for 2003–2007 F-250 and F-350 Powerstroke 6.0L
- The listing does not specify a pipe diameter.
Skip it if you need a stated 3.5-inch diameter; SleYuYir’s 2003–2007 6.0L pipe listing explicitly gives that size.
This kit suits owners of listed 2003–2007 F-250 or F-350 6.0L Powerstroke trucks prioritizing original routing and mounting-point alignment. Since no diameter is stated, buyers requiring a specific pipe size should account for that limit.
Full product details
| Brand | SleYuYir |
|---|---|
| Color | Silver |
| Compatible with Vehicle Type | Car |
| Included Components | Pipe |
| Installation Type | Direct Fit |
| Item Dimensions L x W | 35"L x 10"W |
| Manufacturer | SleYuYir |
| Part Number | Pipe |
| Manufacturer Warranty Description | 1 |
| Material | Stainless Steel |
| Model Number | Pipe |
Listed on Amazon as: Exhaust Pipe Kit Compatible with Ford F250 F350 Powerstroke 6.0L 2003-2007
View on Amazon
#10
10. Flowmaster FlowFX Cat-Back
- Material: Stainless Steel
- Material Type: Stainless Steel
Best for: Gas Super Duty cat-back buyers.
Why it ranks #10: Its listed F-250 and F-350 fitment is for 6.2L and 7.3L engines, not the diesel 6.7L or 6.0L applications in this roundup.
A dual-side-exit layout with black ceramic-coated tips gives this Flowmaster cat-back a distinct configuration for 2017–2024 F-250 and F-350 Super Duty trucks with 6.2L or 7.3L engines. Its Flow FX straight-through muffler is described as producing a deep, aggressive-to-moderate performance sound, while the kit includes installation hardware.
The 3.5-inch tubing transitions to dual 3-inch exits and uses mandrel bends, a layout the listing says maximizes flow while supporting durability through 16-gauge 409 stainless steel. Factory-style hangers in stock locations and included hardware support installation using existing hanger positions. The straight-through Flow FX muffler supplies the stated sound character, and the black ceramic-coated 4.5-inch tips finish the dual-side exit. This application is for 6.2L and 7.3L engines, not 6.7L diesel.
- Cat-back dual-side-exit configuration
- Mandrel-bent 409 stainless tubing
- Factory-style hangers and hardware included
- Flow FX straight-through muffler with black ceramic-coated tips
- Listed for 6.2L and 7.3L engines, not the 6.7L diesel.
Skip it if you need an exhaust for a 6.7L diesel; maXpeedingrods’ 2011–2023 6.7L kit lists F-250, F-350, and F-450 fitment.
This Flowmaster kit suits owners of 2017–2024 F-250 or F-350 Super Duty trucks with 6.2L or 7.3L engines seeking a dual-side-exit cat-back. Its listed engine fitment excludes 6.7L diesel trucks.
Full product details
| Brand | Flowmaster |
|---|---|
| Color | Multicolor |
| Compatible with Vehicle Type | Truck |
| Included Components | Flowmaster 718100 FlowFX Cat-Back Exhaust Kit 3.5 to 3 Inch Dual Side Exit 409 Stainless Steel 4.5 Inch Black Ceramic Coat StainlessTips Compatible with 2017-2024 Ford F250/F350 Super Duty 6.2L 7.3L |
| Item Weight | 71 pounds |
| Manufacturer | Flowmaster |
| Part Number | 718100 |
| Manufacturer Warranty Description | Manufacturer's Limited Lifetime Warranty |
| Material | Stainless Steel |
| Model Number | 718100 |
Avoiding fitment mismatches on F350 exhaust parts
The most important fitment trap is assuming that an F350 badge and a matching engine are enough to confirm a replacement will fit. The maXpeedingrods 4.0-inch Kit excludes cab-and-chassis trucks and notes that cutting may be required for shorter wheelbase bed or cab configurations. Several other listings give engine and model-year fitment but do not spell out every cab or bed combination.
Check your truck’s exact configuration against the seller’s fitment information before ordering, and verify whether the product is a complete kit, a pipe, or only muffler pipes. The LELEHOKA Turbo Pipe deserves extra scrutiny because its title describes a Ford 6.7L application while its specifications name a different vehicle type and engine description.
Treat conflicting listing details as a reason to confirm compatibility, not as a minor wording issue.
Why diameter and exhaust section both matter
A larger diameter does not by itself establish that an exhaust part is the right replacement for your F350. These listings range from a 3.5-inch pipe for an older 6.0L application to 4-inch options for 6.7L trucks and a 5-inch option listed for 6.7L Powerstroke models. They also describe different parts: some are replacement pipes, one is a turbo pipe, one is a muffler pipe set, and the Flowmaster is a cat-back system for 6.2L and 7.3L engines.
Compare the exhaust section and connection points you need as well as the diameter. A pipe with a matching nominal diameter may still differ from the section being replaced or from the truck’s routing.
The provided listings do not establish emissions legality or sound levels for every application, so verify those requirements separately.
How to Choose an F350 Diesel Exhaust
Engine and truck fitment
Start with the exact engine and truck configuration in the fitment listing. Most relevant choices here cover 6.7L Powerstroke F-350 applications, while the SleYuYir 3.5-inch Pipe and SleYuYir 6.0L Pipe Kit are for older 6.0L trucks. The maXpeedingrods 4.0-inch Kit covers 6.7L F-250, F-350, and F-450 pickups but excludes cab-and-chassis trucks; cutting may be needed for shorter configurations.
TEYOLIAO 4-inch Pipes lists a broader 6.7L Super Duty range. Buyers with a 6.7L pickup should compare those broad-fit listings, while owners of an older 6.0L truck should focus on the two 6.0L-specific parts and verify configuration details.
Pipe diameter and replacement section
Match the listed diameter and the exhaust section you actually need to replace. The 6.7L choices include 4-inch parts from maXpeedingrods, TEYOLIAO, Kucaruce, and SleYuYir, plus a 5-inch option from Generic. The 3.5-inch SleYuYir pipe is listed for a 6.0L application, not the newer 6.7L options.
Product scope varies too: the LELEHOKA part is described as a turbo pipe, the Generic 4-inch Muffler Set contains two muffler pipes, and the Flowmaster is a cat-back system for different engines. Buyers replacing a specific section should favour a matching part description; do not choose diameter alone as proof of compatibility.
Material and installation details
Compare the stated steel type and installation description, but do not treat either as a substitute for confirmed fitment. TEYOLIAO 4-inch Pipes specifies 304 stainless steel, while the Kucaruce 4-inch Pipe Kit, maXpeedingrods 4.0-inch Kit, and several other listings specify or describe 409 stainless steel. SleYuYir 4-inch Pipe and LELEHOKA Turbo Pipe list direct-fit or direct bolt-on installation; maXpeedingrods calls its kit bolt-on while also warning that cutting may be needed for some configurations.
Buyers prioritizing the explicitly stated 304 material can compare TEYOLIAO, while those seeking a listed bolt-on replacement should check the fitment caveats and included parts before selecting a product.
Which F350 diesel exhaust should you choose?
For a 6.7L F350 pickup seeking a 4-inch replacement kit, choose the maXpeedingrods 4.0-inch Kit if your truck is not cab-and-chassis and its configuration matches the listing. Choose TEYOLIAO 4-inch Pipes if you want the listing’s 304 stainless steel specification and stated 3-year warranty. The Kucaruce 4-inch Pipe Kit is another 6.7L option, with a stated precision-flanged turbocharger-outlet connection.
If you specifically need a 5-inch part, compare the Generic 5-inch Pipes and confirm the exact replacement section and fitment. For an older 6.0L truck, consider the SleYuYir 3.5-inch Pipe or SleYuYir 6.0L Pipe Kit instead.
Do not select the Flowmaster FlowFX Cat-Back for a 6.7L diesel; its listed engine fitment is different.
Frequently Asked Questions
How can I confirm whether an exhaust part fits my F350 cab, bed, and chassis configuration?
Match the listing to your F350’s engine, year, cab, bed, chassis, and wheelbase before ordering. Check whether it excludes cab-and-chassis trucks or requires cutting for certain configurations. If the listing does not clearly identify your setup, confirm the exact fitment with the seller rather than assuming a general F350 fit applies.
Will changing exhaust diameter or muffler design affect diesel exhaust sound?
Yes, diameter and muffler design can affect exhaust sound, but the product titles here do not provide sound measurements or guarantees. A larger diameter or a different muffler may change the tone or volume. Check the listing for the specific design and seek guidance for your truck if sound level is a key concern.
What emissions equipment or local rules should I check before replacing an F350 exhaust?
Check that the replacement is compatible with your truck’s emissions equipment and complies with rules where the vehicle is registered and operated. Requirements can vary by location and vehicle configuration. Do not assume a part is emissions-legal based only on its title; verify applicable requirements and the listing details before installation.
How do I tell whether I need a full kit or a replacement pipe?
Identify the section of exhaust you intend to replace, then compare it with the listing’s description and included parts. Titles may describe a pipe, pipe kit, muffler set, or cat-back system, which are not necessarily interchangeable. Confirm the exact replacement section and installation details rather than choosing by diameter alone.
Which listed options are intended for a 6.0L rather than a 6.7L F350?
The SleYuYir 3.5-inch pipe and SleYuYir 6.0L Pipe Kit are listed for 2003–2007 6.0L trucks. The other diesel options generally specify 6.7L fitment, while the Flowmaster cat-back lists 6.2L and 7.3L engines. Match the engine and year in the listing to your truck before ordering.
Final Words
For a 6.7L F350 pickup, the maXpeedingrods 4.0-inch Kit is the strongest overall match when the truck’s configuration fits the listing; exclude cab-and-chassis trucks and check whether cutting may be needed. Consider TEYOLIAO if its listed 304 stainless steel and stated 3-year warranty suit your priorities. For a 6.0L truck, compare the two listed 6.0L options.
Verify the exact replacement section and fitment before ordering.

