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NGK

NGK R2556G-8 CL3 Racing Plug R2556G-8

$40.63

SKU: N003 R2556G-8

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

NGK R2556G-8 CL3 Racing Plug R2556G-8

MIA's Description

The NGK R2556G-8 is a racing spark plug engineered to withstand harsh engine conditions. It features a fine wire iridium-tipped center electrode and a platinum-tipped ground electrode for improved ignitability, durability, and anti-fouling capabilities. Special insulator nose configurations enhance throttle response, while corrugated ribs prevent flashover. The pure alumina silicate ceramic insulator offers superior strength and heat transfer, complemented by a copper core for heat removal. Triple seals ensure leak prevention.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandNGK
Part NumberN003 R2556G-8

Videos

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NGK vs Bosch Spark Plugs: Which One Is Best for Your Engine?
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Fake NGK Iridium Spark Plugs | How To Test!!
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How Long do NGK Iridium Spark Plugs Last? - A 100k Mile Review
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Cheaper NGK Platinum Plugs vs Expensive Laser Iridium Spark Plugs - For Honda Vehicles
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NGK Ruthenium Spark Plugs - Are they better than Iridium? Lets Find out! (Real world comparisons)
Ruthenium VS Iridium Spark Plugs, NGK said Ruthenium = no advantage EXCEPT Maybe? Denso Replacements

Ruthenium VS Iridium Spark Plugs, NGK said Ruthenium = no advantage EXCEPT Maybe? Denso Replacements
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NGK Ruthenuim Spark Plugs Are like MAGIC!
Spark Plug Types - NGK Spark Plugs

Spark Plug Types - NGK Spark Plugs
NGK Spark Plugs Overview

NGK Spark Plugs Overview

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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