Fasteners› Engine Fastener Kits

Allstar Performance

Spark Plug Index Shims 14mm

$31.66

SKU: A02M ALL96505

In Stock
In Stock
Ships by Jun 15
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Allstar Performance Spark Plug Index Shims are stackable washers designed for 14mm flat seat spark plugs. They index spark plugs at 30° intervals up to 360° to properly position the ground strap in the cylinder head. This positioning can increase power and provide clearance between the spark plug and piston.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandAllstar Performance
Part NumberA02M ALL96505

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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