Engines and Components› Cylinder Heads and Components

Crown Automotive

Cylinder Head Nut for all 1941-1953 Jeep Vehicles w/ 4-134 L-Head Engine Crown Automotive

$1.74

SKU: C01X 638539

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Crown Automotive 638539 is a cylinder head nut designed for various Jeep models produced between 1941 and 1953. This component features a 7/16 in.-20 thread size and a black oxide coating for durability. Fifteen of these nuts are required for installation.

This cylinder head nut is a direct replacement part, ensuring compatibility with specific Jeep applications. Its construction and specifications are intended to meet the original equipment standards for the listed Jeep vehicles.

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

BrandCrown Automotive
Part NumberC01X 638539

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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