Ignitions and Electrical› Ignition Components

NGK

Spark Plug

$20.88

SKU: N3Y8-18-110

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The NGK N3Y8-18-110 is a spark plug designed for optimal performance and reliability in your vehicle's ignition system. It features OE-level quality and precision fitment to ensure efficient combustion and enhanced engine performance.

NGK is a trusted brand in the automotive industry, known for its commitment to quality and innovation. This spark plug is compatible with various Mazda models, including the RX-8, ensuring a seamless replacement.
Show original supplier description
The NGK N3Y8-18-110 spark plug is engineered to deliver optimal performance and reliability within your vehicle's ignition system. It boasts OE-level quality and precision fitment, ensuring efficient combustion for enhanced engine performance and a smoother running engine. NGK is recognized for its dedication to quality and innovation in the automotive sector. This spark plug features a copper core center electrode and a platinum ground electrode, combined with an iridium tip for superior ignitability and spark efficiency. The non-removable nut electrical terminal type, slant ground configuration, and pin-type ground electrode design are all intended to promote consistent and powerful sparks. With a hex size of 13/16 inches, a reach of 21.00 mm, and a flat seat type, it is designed for a secure and proper fit. Specifically designed for the Mazda RX-8 from 2004 to 2011, this spark plug serves as a direct replacement, ensuring a seamless installation and restoring the vehicle's original ignition performance. It is noted that this spark plug is intended for the leading cylinder and is pre-gapped to .044 inches, with an OE recommended gap of 0.048 inches for the RX-8 application.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandNGK
Part NumberN3Y8-18-110
CategoryIgnitions and Electrical

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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