Engines and Components› Camshafts and Valvetrain

Manley Performance

Manley Ford GT350 Voodoo 5.2L Race Master Series Exhaust Valve Set - 1.280in Dia

$460.06

SKU: M004 12631-8

In Stock
In Stock
Ships by Jun 17
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The Manley Performance 12631-8 is a set of exhaust valves designed for the Ford Mustang Shelby GT350 with the 5.2L Voodoo V8 engine. These valves are constructed from stainless steel and feature a 1.280-inch head diameter, a 0.2345-inch stem diameter, and an overall length of 4.340 inches.

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

BrandManley Performance
Part NumberM004 12631-8

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