Exterior Components› Body Panels and Components

Stage 8

AMC V8 (4) 3/8 & (8) 5/16

$66.92

SKU: S029 8939

In Stock
In Stock
Ships by Aug 3
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

AMC V8 (4) 3/8 & (8) 5/16

MIA's Description

The Stage 8 8939 is a header bolt kit designed for AMC V8 engines. It includes eight 5/16-18 x 1" bolts and four 3/8-16 x 1" bolts, all featuring a 12-point head. Stage 8 is known for its active mechanical locking fastener systems, ensuring reliability when installed correctly.

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

BrandStage 8
Part NumberS029 8939

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