Best Spark Plugs For 370Z: Six-Plug Iridium Options Compared

#1 · Best Overall

1. Sixity Auto NGK Laser Iridium

Best for: Explicit 370Z Fitment.

Why it ranks #1: Its listing explicitly covers the Nissan 370Z 3.7L V6 and includes six genuine NGK Laser Iridium plugs as direct replacements.

A stated 2009–2020 Nissan 370Z 3.7L V6 application makes this six-pack’s fitment coverage its clearest advantage. The set uses NGK Laser Iridium plugs and is described as a direct replacement, giving owners a named plug type and vehicle range to assess for a standard replacement job.

The six-plug quantity matches a full V6 set, while the explicit year range helps 370Z owners narrow the application before ordering. NGK Laser Iridium construction identifies the plug material and product line, and the direct-replacement description supports a like-for-like replacement workflow. The listing also says original packaging and hardware are included, which keeps those items together with the plugs. It advises confirming vehicle fitment, so compare the stated range against the exact car before installation.

Skip it if you want a kit that also replaces ignition coils; AIP Electronics Dragon Fire Kit-1605 combines coils and iridium plugs.

This is a practical match for 370Z owners seeking six NGK Laser Iridium direct-replacement plugs across the listed 2009–2020 range. Check the exact vehicle application first; the listing itself recommends confirming fitment.

Listed on Amazon as: 6 pc NGK Laser Iridium Spark Plugs for Nissan 370Z 3.7L V6 2009-20

#2 · Six-Plug NGK Set

2. Newparts NGK Laser Iridium

• Core Material: Iridium

Best for: Six NGK Laser Iridium Plugs.

Why it ranks #2: The product includes six NGK Laser Iridium plugs and names the 370Z among its vehicle-specific applications.

Six NGK Laser Iridium plugs in one set are the central appeal for a 370Z owner planning a complete V6 replacement. Newparts identifies the fit as vehicle-specific and names 370Z among the listed applications, alongside several Infiniti 3.7L models.

The six-piece kit content matches a full V6 plug change, while the NGK Laser Iridium designation gives buyers a specific manufacturer and plug line to consider. Newparts also lists a 0.044-inch specification in the title, offering a concrete detail for comparison with the vehicle’s requirements. Its vehicle-specific fit description and inclusion of 370Z, EX37, FX37, G37, and M37 in the title help frame the intended application. The supplied fit type is not a year range, so check the exact car.

Skip it if you need an explicit 370Z year range in the listing; Sixity Auto names 2009–2020 compatibility for its NGK Laser Iridium set.

This set suits a 370Z owner looking for six NGK Laser Iridium plugs in one kit. Because the supplied details do not give a model-year range, verify the application for the exact vehicle before ordering.

Listed on Amazon as: NGK Set of 6 Laser Iridium Spark Plugs 0.044 For 370Z EX37 FX37 G37 M37 3.7l V6

#3 · Broad Infiniti Fitment

3. LCWRGS 90174 Iridium

• Core Material: Iridium

Best for: Wide 3.7L Cross-Fitment.

Why it ranks #3: This six-pack lists Nissan 370Z fitment alongside several Infiniti 3.7L models and identifies 90174 and DF8H11B references.

Coverage for Nissan 370Z models from 2009 through 2020 alongside several Infiniti 3.7L V6 vehicles is this six-pack’s main draw. LCWRGS identifies the plugs by the 90174 reference and iridium construction, giving buyers specific application and product details to compare.

The six-plug set is listed for the 370Z’s 3.7L V6 and a range of Infiniti models, making its application list useful to owners comparing related vehicles. The 90174 and DF8H11B references help identify the plug type, while the iridium material supplies another concrete specification. LCWRGS describes installation as plug-and-play, which supports a straightforward replacement workflow. The listed thread size is M12 x 1.25, so buyers should compare that specification with the requirements for their exact vehicle before installation.

Skip it if you want a set explicitly identified as NGK Laser Iridium; Sixity Auto names NGK and lists 2009–2020 370Z compatibility.

This set suits a 370Z owner seeking six iridium plugs with a broad Infiniti and Nissan application list. Compare the stated thread size and plug references with the exact vehicle requirements before beginning replacement.

Listed on Amazon as: 90174 Iridium Spark Plugs 6 Pack for Infiniti G37 2008-2013 3.7L V6

#4

4. OverstockDirect NGK Laser Iridium

• Core Material: Iridium

Best for: NGK Iridium Six-Pack.

Why it ranks #4: It supplies six NGK Laser Iridium plugs and lists several Infiniti 3.7L applications, though the supplied fitment details do not name the 370Z.

NGK Laser Iridium construction is the defining feature of this six-plug set, offering a 370Z owner a named OEM-style plug option with iridium at both the core and top. The listing identifies the plugs as often specified as original equipment and frames the set around reliability and longevity.

The six-piece quantity suits a full V6 plug replacement, while the DF8H11B designation gives buyers a specific NGK plug reference to compare with their vehicle requirements. NGK is identified as the manufacturer, and the listing describes its Laser Iridium plugs as often specified as original equipment; that combination gives shoppers a clear brand and plug type to evaluate. The supplied vehicle list includes several 3.7L Infiniti models, but does not explicitly name the 370Z, so check the application before ordering.

Skip it if you need a listing that explicitly names the 370Z; Sixity Auto's NGK set specifies 2009–2020 370Z fitment.

A buyer seeking six NGK Laser Iridium plugs with an OEM-oriented description may find this set worth considering. Its supplied application details do not name the 370Z, so verify the vehicle match before choosing it for that car.

Listed on Amazon as: OverstockDirect NGK 90174 Laser Iridium Spark Plugs DF8H11B, 6 Pack

#5 · Pre-Gapped Plugs

5. AIP Dragon Fire Iridium Plugs

Best for: Factory Pre-Gapped Plugs.

Why it ranks #5: The six-plug set explicitly lists Nissan 370Z 3.7L V6 compatibility and says the plugs are pre-gapped from the factory.

Factory pre-gapping is the most practical differentiator of this six-piece Dragon Fire iridium plug set, potentially simplifying preparation before installation. AIP Electronics lists compatibility with the Nissan 370Z 3.7L V6 and describes the plugs as a direct OEM replacement with a focus on cold starts and acceleration.

A set of six suits the listed V6 application, while factory pre-gapping means the plugs arrive with a stated preparation step already completed. The listing also claims quicker cold starts and faster acceleration, attributing those benefits to electrode technology and electrical-energy conduction. AIP Electronics describes the product as a direct OEM replacement and advises checking its vehicle chart for fitment. That chart is particularly relevant because the supplied feature text also contains unrelated Subaru application wording.

Skip it if you want NGK-branded plugs with a clearly stated 370Z year range; Sixity Auto lists NGK Laser Iridium plugs for 2009–2020 models.

This set may suit 370Z owners who value pre-gapped plugs and a direct-replacement description. The listing’s mixed fitment text makes checking the AIP vehicle chart especially important before ordering for a specific car.

Listed on Amazon as: AIP Electronics Dragon FIRE Performance Set of 6 Iridium Spark Plugs Compatible with 2008-2020 Infiniti G37, M37, Q40, Q50, Q70, Q70L, QX50, QX70, Nissan 370Z 3.7L V6 90174 1305 OEM Fit DFSP1011x6

#6 · Double-Iridium Design

6. JC Whitney Double Iridium

Best for: Double-Iridium Specification.

Why it ranks #6: This six-piece double-iridium set lists Nissan 370Z compatibility and specifies a 0.039–0.043-inch gap.

Double-iridium construction is the defining specification of this six-plug JC Whitney set for the Nissan 370Z 3.7L six-cylinder application. Its listing also supplies a gap range, reach, heat range, and resistance, giving hands-on buyers more setup details than a plug description alone.

The six-plug quantity covers a full V6 set, while the listed 0.039–0.043-inch gap range and 1.04-inch reach provide concrete dimensions for application comparison. JC Whitney also specifies a flat seat, one ground electrode, a 0.55-inch hex size, and 5000 resistance. Those details can help a buyer evaluate the plug against vehicle requirements before installation. Compatibility includes the 370Z and several Infiniti models, and an installation manual is listed among the included components.

Skip it if you want NGK Laser Iridium plugs with an explicit 2009–2020 370Z year range; Sixity Auto lists that application.

A detail-focused 370Z owner may appreciate this set’s double-iridium material and multiple listed dimensions. Its gap is given as a range, so confirm the appropriate setting for the particular vehicle before installation.

Listed on Amazon as: JC Whitney 6pcs Double Iridium Spark Plugs

#7

7. A-NAFTULY Double Iridium

• Core Material: Iridium

Best for: Double-Iridium Six-Pack.

Why it ranks #7: Its six-pack lists Nissan 370Z fitment and reference number 90174, with a stated gap of 0.04 inches.

Double-iridium construction and a six-piece quantity make this A-NAFTULY set a clearly specified option for 370Z 3.7L V6 owners. Its listing gives the 90174 and DF8H11B references, as well as vehicle coverage through 2020, which helps shoppers identify the intended application.

Six plugs suit a full V6 replacement, and the listed Nissan 370Z range runs from 2009 through 2020. The double-iridium material identifies the plug construction, while the listing provides a 0.04-inch gap in its specifications and also states 0.044 inches among additional facts. Because those gap figures differ, buyers should resolve the correct specification for their vehicle before installation. The 90174 and DF8H11B references offer further identifiers for checking the intended plug.

Skip it if you want an NGK Laser Iridium set with a single stated application range; Sixity Auto lists six plugs for 2009–2020 370Z models.

This set may fit buyers seeking six double-iridium plugs and familiar 90174 references for a 370Z. Resolve the listing’s conflicting gap figures against the vehicle specification before installation.

Listed on Amazon as: Double Iridium Spark Plugs 6 Pack 90174 DF8H11B for Infiniti 3.7L 08-19

#8

8. OYEAUTO 93501 Iridium

• Core Material: Iridium

Best for: Broad Nissan Application List.

Why it ranks #8: The package contains six iridium plugs, and its fitment details specifically include Nissan 370Z 3.7L V6 applications.

A wide vehicle application list, including Nissan 370Z versions with a 3.7L V6, sets this six-pack apart for owners comparing replacement options. OYEAUTO identifies the plugs as iridium and specifies an M14x1.25 thread size, pairing vehicle coverage with a concrete plug specification.

The listing names multiple 370Z body styles and model-year ranges, including coupe and convertible applications, which helps buyers narrow compatibility by configuration. Six plugs are included, supporting a full-set purchase for the V6. The iridium material and stated M14x1.25 thread size provide additional product details for comparison against the vehicle’s requirements. Because the page says its displayed fitment is partial and directs shoppers to the full model list, review that list before selecting a specific application.

Skip it if you prefer a named NGK plug line with an explicit 2009–2020 range; Sixity Auto lists NGK Laser Iridium plugs for those 370Z years.

Consider this set if you want six iridium plugs and vehicle coverage that names several 370Z configurations. Its application details are presented as partial, so check the full fitment list for your exact model.

Listed on Amazon as: 93501 Iridium Spark Plugs LKAR7BIX11S 6 Pack Fit for Nissan Infiniti

#9

9. AIP Dragon Fire Coil Kit

Best for: Coils And Plugs Together.

Why it ranks #9: This kit title includes Nissan 370Z compatibility and combines ignition coils with iridium plugs, but it is a broader replacement package.

A combined ignition-coil and iridium-plug kit is the key distinction here, letting a 370Z owner consider replacing two ignition components in one purchase. AIP Electronics lists plug-and-play installation, OEM mounting points, and compatibility with the 3.7L V6 Nissan 370Z among its stated applications.

The kit pairs ignition coils with iridium spark plugs, so buyers addressing both components can source them together rather than assembling a plug-only order. Its stated plug-and-play installation and factory OE mounting points point to a direct-replacement workflow, while performance-quality polymers and heat resistance address durability in the ignition components. The listing claims up to 15% more ignition power and compatibility with the Nissan 370Z 3.7L V6; check the vehicle chart to confirm the specific application.

Skip it if you only need a clearly quantified six-plug set; Sixity Auto lists six NGK plugs and specifies 2009–2020 370Z fitment.

This kit suits 370Z owners considering coils and plugs together who value stated OE mounting points and plug-and-play installation. Check the application chart, and note that the supplied listing does not specify the plug quantity.

Listed on Amazon as: DRAGON FIRE PERFORMANCE Power Pack Ignition Coil & IRIDIUM Spark Plug Kit Compatible with Nissan 370Z & Infiniti FX37 G37 M37 Q40 Q50 Q60 Q70 QX50 QX70 3.7L V6 VQ37VHR, OEM FIT Kit-1605

#10

10. KarParts360 NGK Ruthenium HX

• Core Material: Platinum

Best for: Ruthenium HX Plug Option.

Why it ranks #10: The listing names Nissan 370Z fitment but supplies four plugs, fewer than the six needed for a full V6 set.

NGK Ruthenium HX construction distinguishes this plug from the roundup’s iridium options, giving 370Z shoppers a different named electrode technology to consider. The listing identifies LKAR8BHX and 91784, and its title specifies Nissan 370Z coverage from 2009 through 2020.

The product is sold as a box of four, so it does not provide the six plugs needed for a full V6 replacement in one box. That quantity may suit a partial replacement, but buyers planning a complete set need to account for the difference. NGK’s Ruthenium HX line is described as offering performance and life expectancy, while the listing gives a 0.8-millimeter gap specification. Its title states 370Z coverage, but confirm the application against the exact vehicle before purchase.

Skip it if you need six NGK plugs in one purchase; Newparts lists a set of six NGK Laser Iridium plugs for the 370Z.

This option suits a buyer specifically seeking an NGK Ruthenium HX plug and a four-plug quantity. For a complete 370Z V6 replacement, account for the short count and verify the stated application.

Listed on Amazon as: NGK For Nissan 370Z 2009-2020 Ruthenium HX Spark Plug Box of 4 LKAR8BHX | 91784