Ignitions and Electrical› Ignition Components

NGK

NGK YR55IX CL14 Iridium IX Plug YR55IX

$24.39

SKU: N003 YR55IX

In Stock
In Stock
Ships by Jun 19
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The NGK YR55IX is an Iridium IX series spark plug designed for performance enthusiasts. It features a fine wire center electrode made of an iridium alloy with a high melting point, ensuring a durable and stable spark. The plug also includes trivalent metal plating for anti-corrosion and anti-seizing properties, corrugated ribs to prevent flashover, and a pure alumina silicate ceramic insulator for strength and heat transfer.

Key specifications include a 14mm thread diameter, 1.25mm thread pitch, and a 1.5mm (0.059") gap. The center electrode is 0.6mm, and the ground electrode is made of nickel. This spark plug is designed with a 3.0mm extended metal shell and a copper core for heat removal, with triple seals to prevent leakage.

Fitment

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Specifications

BrandNGK
Part NumberN003 YR55IX

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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