Engines and Components› Cylinder Heads and Components

ARP

ARP M12 x 1.5 x 35 Hex Black Oxide Bolts (5/pkg)

$17.54

SKU: A00M 664-1003

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

Easy — 1–2 hours

Description

The ARP 664-1003 is a set of five 8740 chromoly bolts with a black oxide finish. These bolts feature an M12 x 1.50 thread size and a 35mm underhead length. They are rated at 180,000 psi tensile strength.

Designed for general installation use on cars, boats, and trailers, these ARP bolts offer a significant margin of safety over standard Grade 8 hardware. They include washers and have a 14mm wrench diameter.

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 664-1003

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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