This ARP cylinder head stud kit is built for Mazda 4-cylinder engines, using chromoly studs with a black oxide finish and 12-point nuts for consistent clamping load under high cylinder pressure.
Specifications:
- 12-Point Nuts
- Chromoly Material
- Black Oxide Finish
Applications:
- Mazda 4-Cylinder
FAQ
What are these head studs made from?
They're made from chromoly steel with a black oxide finish.
What nut style is included?
The kit uses 12-point nuts for a secure, high-torque fit.
Which engines is this kit designed for?
This kit is designed for Mazda 4-cylinder engines.
Why use head studs instead of head bolts?
Studs provide more consistent, repeatable clamping force than bolts, which helps maintain a reliable head gasket seal.

