Engines and Components› Cylinder Heads and Components

ARP

ARP 3/8-16 x 2.500 12pt Black Oxide Bolts

$16.22

SKU: A00M 642-2500

In Stock
In Stock
Ships by Jul 31
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The ARP 642-2500 is a set of five chromoly bolts designed for various applications on cars, boats, and trailers. These bolts feature a black oxide finish and are heat-treated to a nominal tensile strength of 180,000 psi, offering a higher safety margin than Grade 8 hardware.

Each bolt has a 3/8 in.-16 thread size, a 2.500 in. underhead length, and a flanged 12-point head style. They are made from ARP Custom 450 grade chromoly material and include washers. The wrench diameter required is 3/8 in.

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

BrandARP
Part NumberA00M 642-2500

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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