Sale

GM

Crankshaft Bolt

$9.90 $5.20 Save $4.70

SKU: 12557840

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return

Description

This bolt is engineered with under-head sealant to ensure a leak-free installation. It serves as a crucial replacement for stock crank bolts, which are torque-to-yield and should never be reinstalled after removal. This component is specifically designed for all Gen III and Gen IV LS engines, with the exception of the LS7 and LS9 variants.

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

BrandGM
Part Number12557840
CategoryEngines and Components

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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