Engines and Components› Cylinder Heads and Components

ARP

10mm x 1.25 Stud 4.550 Long Broached

$20.85

SKU: A00M AM4.550-1B

In Stock
In Stock
Ships by Jun 18
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The ARP AM4.550-1B is a universal engine stud. It features a 10 mm x 1.25 thread size for one end and a 10 mm x 2.0 thread size for the other. This stud is 4.550 inches long and constructed from 8740 chromoly alloy with a black oxide finish.

This fastener is sold individually and is broached. ARP, Automotive Racing Products, has been providing high-performance fasteners since 1968, serving various racing applications and OEM replacement needs.

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

BrandARP
Part NumberA00M AM4.550-1B

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.

View Full Return Policy