Ignitions and Electrical› Ignition Components

NGK

NGK Laser Iridium Spark Plug Box of 4 (ILTR5C11)

$5.16

SKU: N003 5581

In Stock
In Stock
Ships by Jul 31
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The NGK 5581 is a Laser Iridium Spark Plug engineered for reliable ignition performance. It features a fine iridium center electrode tip for enhanced durability and a stable spark, along with a copper core for improved conductivity. This spark plug is designed as an OE direct replacement, requiring no modifications for installation.

The spark plug has a 14mm thread diameter and a 25mm reach, with a 5/8" (16mm) hex size for common tools. It also includes a resistor to suppress radio frequency interference.

Fitment

Fitment Guaranteed

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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 5581

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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