Ignitions and Electrical› Ignition Components

NGK

NGK Laser Iridium Spark Plug Box of 4 (KR8AI)

$20.91

SKU: N003 5477

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The NGK 5477 is a Laser Iridium Spark Plug designed for high-performance engines. It features a fine wire iridium alloy center electrode for durability and a stable spark, along with a platinum tip ground electrode for excellent ignitability and service life. The spark plug also includes a solid copper core for superior heat dissipation and conductivity, and trivalent metal plating for anti-corrosion and anti-seizing properties. This spark plug is best suited for vehicles originally equipped with OE fine wire iridium alloy plugs.

Fitment

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

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Specifications

BrandNGK
Part NumberN003 5477

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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