Best Spark Plugs For 370Z: Compare Six-Plug Sets

#1 · Best Overall

1. Sixity NGK Laser Iridium

Best for: NGK 370Z direct replacement.

Why it ranks #1: Specifically lists the 370Z 3.7L V6, includes six genuine NGK Laser Iridium plugs, and notes original packaging and hardware.

Explicit 2009–2020 Nissan 370Z 3.7L V6 coverage makes this six-pack’s application clear at a glance. It uses genuine NGK Laser Iridium plugs and is described as a direct replacement, giving owners a straightforward way to source a full set for the listed model years.

The stated 2009–2020 370Z range and 3.7L V6 description let owners compare the listing against their vehicle before purchase, while the six-plug quantity matches a complete set as presented. Genuine NGK Laser Iridium parts provide the specified plug type, and included hardware supports replacement work. The listing calls these direct replacement auto parts, so it suits buyers following that replacement approach; it does not provide a detailed installation procedure or lifespan figure.

Skip it if you want NGK Ruthenium HX plugs instead of Laser Iridium; Sixity Auto’s B0F8PKYH2W listing specifies the Ruthenium line.

A strong fit for 370Z owners from the listed 2009–2020 range seeking a genuine NGK Laser Iridium six-pack. Its fitment statement is broad, so compare the exact vehicle details before ordering, especially if your application differs from the stated 3.7L V6.

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

#2 · Best Ruthenium Set

2. Sixity NGK Ruthenium HX

Best for: NGK Ruthenium HX six-pack.

Why it ranks #2: A six-plug set of genuine NGK Ruthenium HX parts explicitly fits the 370Z 3.7L V6 and includes original packaging and hardware.

NGK Ruthenium HX technology comes in a six-plug set explicitly listed for Nissan 370Z 2009–2020 3.7L V6 models. For owners comparing plug materials, this offers a full-set alternative to NGK’s Laser Iridium listing while retaining stated direct-replacement positioning.

The vehicle coverage spans every 370Z model year named from 2009 through 2020, and the six-piece quantity aligns with a complete set for the listed V6 application. Genuine NGK parts and included hardware are stated, which gives buyers a defined brand and package contents for replacement planning. The listing calls the plugs direct replacement auto parts, but it does not supply a service-life interval or technical Ruthenium specifications, so those details cannot be compared from this listing alone.

Skip it if you specifically want NGK Laser Iridium rather than Ruthenium HX; Sixity Auto’s B0F7VCXWD5 set lists Laser Iridium for the same 370Z years.

This fits owners seeking a genuine NGK Ruthenium HX six-pack for the listed 2009–2020 370Z 3.7L V6. Choose it for that plug line rather than Laser Iridium, and note that the listing does not specify a service interval.

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

#3 · Best Stated Gap

3. A-Premium Double Iridium

• Core Material: Platinum
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car

Best for: Wide 3.7L V6 application.

Why it ranks #3: Its six-plug fitment includes the Nissan 370Z 3.7L V6 and specifies a 0.044-inch gap alongside reference numbers 90174 and DF8H11B.

A six-plug double-iridium set with stated Nissan 370Z 2009–2020 compatibility gives this A-Premium listing a broad 3.7L V6 scope. Its vehicle list also names multiple Infiniti applications, useful to shoppers comparing replacement plugs across related model families and years.

A-Premium cites reference numbers 90174, DF8H11B and 1305, which helps buyers cross-check the replacement specification, while the 1.1 mm gap is a concrete listed dimension for comparing plug details. The six-piece pack and stated 370Z 3.7L V6 fitment align the quantity and application for a full set. Its extensive Infiniti fitment list also helps identify other supported 3.7L vehicles, though those listings do not replace checking the exact car.

Skip it if you require a listing that identifies both core and top as iridium; BDFHYK’s 90174 set lists iridium for both.

This is a practical candidate for 370Z owners who want a six-piece set with stated 2009–2020 3.7L V6 coverage and cross-reference numbers. Note its specifications distinguish a platinum core from an iridium top when comparing material descriptions.

Listed on Amazon as: A-Premium Double Iridium Spark Plugs Pack of 6, Fine Wire, 3.7L V6 Engine

#4 · Best OEM-Style Reference

4. NGK Laser Iridium DF8H11B

• Core Material: Iridium
• Top Material Type: Iridium

Best for: OEM-style iridium replacement.

Why it ranks #4: Six NGK Laser Iridium plugs use reference 90174 DF8H11B, and the listing identifies this plug as often specified as original equipment.

NGK Laser Iridium construction is the defining feature here, paired with a six-plug set of DF8H-11B 90174 parts. The listing identifies this plug as often specified as original equipment, making it a sensible route for 370Z owners seeking an OEM-associated replacement rather than a different plug technology.

The six-piece quantity suits the 370Z’s 3.7L V6 application, while the Laser Iridium specification connects the set to NGK’s stated focus on performance and longevity. NGK is identified as an OEM spark-plug supplier, a relevant provenance point for buyers prioritizing an established replacement line. The supplied vehicle list explicitly covers several Infiniti 3.7L V6 models, but its visible portion does not establish 370Z fitment; verify the specific application before ordering.

Skip it if you need listing text that explicitly confirms 370Z fitment; the Sixity Auto NGK Laser Iridium listing names 2009–2020 370Z models.

This suits buyers seeking NGK Laser Iridium plugs and an OEM-associated replacement set for a 3.7L V6. The supplied fitment excerpt does not confirm the 370Z, so establish vehicle application before relying on this listing.

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

#5

5. BDFHYK Double Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car

Best for: Double-iridium cross-model set.

Why it ranks #5: The six-plug 90174 replacement listing explicitly includes Nissan 370Z 3.7L V6 fitment and states a one-year manufacturer warranty.

Both the core and top are listed as iridium, and the six-plug set explicitly covers Nissan 370Z models from 2009–2020. That combination makes this BDFHYK replacement an option for owners seeking a clearly identified double-iridium set with broad Infiniti 3.7L V6 coverage too.

The stated 370Z year range and six-plug quantity give shoppers a useful application and set-size starting point for replacement planning. BDFHYK also lists compatibility with numerous Infiniti 3.7L models, which helps buyers distinguish this cross-model offering from a narrower application listing. The iridium core and top identify the plug materials, while the feature description claims ignition performance improvements; those claims are not accompanied here by measured figures, so treat them as product-description claims.

Skip it if you prefer a stated NGK Laser Iridium direct replacement; Sixity Auto’s 2009–2020 370Z listing identifies that plug line.

Consider this set if you want double-iridium materials and an expressly listed 2009–2020 370Z application, alongside broad Infiniti coverage. Buyers who prioritize quantified performance data should note that the listing’s ignition claims have no supporting measurements in the supplied details.

Listed on Amazon as: BDFHYK 90174 Double Iridium Spark Plugs Compatible with INFINITI EX37 G37 M37 Q40 Q50 Q60 Q70 Q70L QX50 QX70,Compatible with Nissan 370Z 3.7L V6 Replacement for DF8H11B Set of 6

#6

6. A-NAFTULY Double Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car

Best for: Double-iridium six-pack.

Why it ranks #6: This six-plug replacement lists 370Z fitment, the 90174 and DF8H11B references, a 0.044-inch gap, and a 12-month warranty.

A six-piece double-iridium set explicitly lists Nissan 370Z 2009–2020 fitment, alongside a long roster of Infiniti 3.7L models. That combination gives buyers a clear application range and a named plug construction in one replacement listing from A-NAFTULY.

The 12 mm thread size and 0.044-inch gap are supplied dimensions that help buyers compare this set’s specifications with their vehicle’s requirements, while the six-plug quantity suits the listed V6 application. The cross-reference numbers 90174 and DF8H11B further support specification checking. A-NAFTULY also lists a 12-month warranty, but the details do not give a service-life estimate; the iridium construction is the stated material rather than evidence of a particular replacement interval.

Skip it if you need an NGK-branded replacement with model-year coverage; Sixity Auto’s B0F7VCXWD5 listing specifies genuine NGK Laser Iridium plugs for 2009–2020.

Choose this if you want a six-piece double-iridium set with explicit 370Z year coverage and useful reference dimensions. Its application details do not break out individual 370Z trims, so buyers with a particular configuration should compare the vehicle requirements before purchase.

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

#7

7. LCWRGS 90174 Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: 6 Pack Spark Plugs 90174 for 2008-2013…

Best for: 90174 cross-reference option.

Why it ranks #7: The listing specifies six iridium plugs and includes 370Z 3.7L fitment, reference 90174, and a one-year warranty.

LCWRGS names 90174, DF8H11B and DF8H-11B as OE part references and lists 2009–2020 Nissan 370Z 3.7L V6 fitment. Those cross-checkable identifiers, paired with six iridium plugs, give replacement shoppers a clear starting point.

The six-plug set is stated for the 370Z’s 3.7L V6 application and also covers a long list of Infiniti 3.7L vehicles, helping buyers assess cross-model use from the supplied information. Its M12 x 1.25 thread size is another concrete specification for comparison. LCWRGS describes the plugs as plug-and-play and easy to install, which may simplify the replacement workflow, though no installation steps are supplied. The listing also identifies a one-year warranty.

Skip it if you want NGK Laser Iridium parts identified as genuine; Sixity Auto’s B0F7VCXWD5 listing names genuine NGK plugs for 2009–2020 370Z models.

A good fit for 370Z owners seeking a six-pack with familiar 90174 cross-references and stated 2009–2020 3.7L V6 coverage. The listing’s installation claim is brief, so it offers no step-by-step guidance for buyers handling the work themselves.

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

#8

8. Sixity NGK Laser Iridium Early Fit

• Core Material: Iridium
• Top Material Type: Ceramic, Metal
• Compatible with Vehicle Type: Car, Truck

Best for: Early-year NGK Laser Iridium.

Why it ranks #8: This six-plug genuine NGK Laser Iridium set is listed for the 370Z 3.7L V6, but its stated fitment covers only a limited model-year range.

Explicit coverage for 2009 and 2010 Nissan 370Z 3.7L V6 models sets this NGK Laser Iridium six-pack apart from broader-year listings. Genuine NGK parts, original packaging and hardware make its specified replacement contents clear for owners of those early model years.

The six-plug quantity is presented for the 370Z V6, while the narrow 2009–2010 compatibility statement gives owners of those years a clear application reference. NGK Laser Iridium identifies the plug type, and the listing calls the parts direct replacements. Original packaging and hardware are also included, which clarifies what accompanies the plugs. The year range is limited to 2009–2010 in this listing, so later 370Z owners should select a product whose stated coverage includes their model year.

Skip it if you have a 2011–2020 370Z and need explicit coverage; Sixity Auto’s B0F7VCXWD5 listing names 2009–2020 models.

This is a focused option for owners of a 2009 or 2010 370Z 3.7L V6 seeking a genuine NGK Laser Iridium six-pack. Its stated fitment stops at 2010, making the listed year range the key boundary.

Listed on Amazon as: 6 pc NGK Laser Iridium Spark Plugs for Nissan 370Z 3.7L V6 2009-10

#9

9. OYEAUTO 93501 Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car

Best for: Broad Nissan fitment listing.

Why it ranks #9: The six-plug listing includes Nissan 370Z fitment, but its 93501 reference and M14x1.25 thread specification differ from the 90174-focused options.

This six-pack’s listed 93501 Iridium plugs cover Nissan 370Z models across several body styles and model-year spans, including Base, Nismo, Touring and Sport applications. The broad fitment detail makes it useful for owners who want more than a single generic 370Z reference.

The listing names 2009–2020 370Z Base and Nismo Coupe 3.7L V6 applications, along with year ranges for Touring and Sport coupe or convertible versions. That breakdown helps shoppers compare body style and trim against their vehicle rather than relying only on the broad title. The six-plug quantity suits the V6 set size, and the iridium top and core are specified. Fitment interface text notes that only some models display, so the supplied list may not be exhaustive.

Skip it if you want the fitment summary to focus on the 370Z’s 2009–2020 range; LCWRGS lists that range directly with 90174 references.

This suits 370Z owners whose trim or body style appears in the supplied fitment list and who value a six-piece iridium set. Because the interface says it displays only some models, use the detailed application information for a careful match.

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

#10

10. KarParts360 NGK Ruthenium HX

• Core Material: Platinum
• Compatible with Vehicle Type: Motorcycle

Best for: Ruthenium HX line preference.

Why it ranks #10: Although titled for the 370Z, this NGK Ruthenium HX listing contains four plugs, not the six required for a complete V6 replacement.

NGK Ruthenium HX technology is the defining choice in this listing, which names Nissan 370Z models from 2009–2020. The supplied box contains four plugs, making quantity the key practical consideration for owners planning a full replacement on the V6.

The Ruthenium HX specification distinguishes this option from the listings centered on Laser Iridium, while the stated 370Z 2009–2020 range gives a vehicle-application reference. However, a box of four does not provide the six plugs needed for a complete set as presented for a V6; buyers would need to account for the remaining plugs separately. NGK describes its Ruthenium technology as focused on performance and life expectancy, but no specific service interval is supplied.

Skip it if you need six NGK Ruthenium HX plugs together; Sixity Auto’s B0F8PKYH2W listing supplies a six-pack for 2009–2020 370Z models.

This is for 370Z owners specifically choosing NGK Ruthenium HX and willing to plan around a four-plug box. Since the listed V6 application calls for a full set beyond that quantity, consider how you will source the remaining plugs.

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