Sale

Engines and Components› Crankshafts and Components

Brisk Racing

Brisk Iridium/Yttrium Spark Plug

$12.65 $10.35 Save $2.30

SKU: RR14BYIR-7

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Brisk Racing RR14BYIR-7 is an iridium performance spark plug designed for modern, highly efficient, and stressed engines. It features a 14mm thread diameter, 25mm reach, and a tapered seat. The spark plug utilizes an Iridium core center electrode with a Yttrium alloy body and earth electrode.

This design offers a very long service life of up to 100,000 km or 60,000 miles. It also provides a lower voltage requirement, which can prolong ignition coil lifespan, lead to easier cold starts, and reduce the chance of misfires.
Show original supplier description
The Brisk RR14BYIR-7 spark plug is engineered with advanced materials for enhanced engine performance and longevity. It utilizes an Iridium core for the center electrode, complemented by a Yttrium alloy for the body and ground electrode. This combination offers a very long service life, extending up to 100,000 km or 60,000 miles, making it a durable choice for demanding applications. One of the key benefits of the RR14BYIR-7 is its significantly lower voltage requirement. This is achieved through the Yttrium alloy construction, which helps prolong the lifespan of ignition coils. The reduced voltage demand contributes to easier cold starts, minimizes the likelihood of misfires caused by fouling (whether from oil burning, alternative fuels, or prolonged idling), and generally supports more efficient combustion. Its features include nickel/zinc coating for corrosion protection and a projected tip design. Key specifications include a 14mm thread diameter, a 25mm (1-inch) thread reach, a 16mm (5/8-inch) hexagon for wrench fitment, and a tapered seat. The design is Iridium/Yttrium, it includes a resistor, and it features a projected tip. The heat range is rated at 14. Popular applications include the Ford Mustang 5.0 Coyote, Chevy LT1/LT4/LSA, Dodge HEMI Engines 6.1/6.4L, Dodge SRT 4, Chrysler 300, Chevy Cobalt SS, Saturn ION Redline, Chrysler PT Cruiser, and Ford Focus.

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

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

BrandBrisk Racing
Part NumberRR14BYIR-7
CategoryIgnitions and Electrical
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy