Ignitions and Electrical› Ignition Components

Autolite

SINGLE RACING PLUG

$21.52

SKU: A035 AR25931

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

Easy — 1–2 hours

Description

The Autolite AR25931 is a racing spark plug engineered for maximum track performance. It features a cut-back ground electrode for optimal ignitability and enhanced heat transfer, leading to quicker starts and consistent power delivery. The yttrium-enhanced alloy reduces ground wire temperature, making it suitable for colder heat ranges and demanding performance modifications.

Built with anti-corrosive nickel plating, these spark plugs resist rust and offer long-lasting durability. The high alumina multi-rib ceramic insulator provides superior thermal conductivity and insulation, preventing flash-over and increasing strength.

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

BrandAutolite
Part NumberA035 AR25931

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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