The ARP 145-4206 is a cylinder head stud kit for Mopar B/RB-Series engines. Studs are machined from chromoly steel with a black oxide finish and secured with 12-point nuts.
Specifications:
- 12-Point nuts
- Chromoly steel construction
- Black oxide finish
Applications:
- Mopar B/RB-Series engines
FAQ
What nut style does the ARP 145-4206 head stud kit use?
It uses 12-point nuts.
What material are the studs made from?
They are machined from chromoly steel and finished in black oxide.
Which engines does this kit fit?
Mopar B/RB-Series engines.
Is this a stud kit or a bolt kit?
It is a cylinder head stud kit, using studs and 12-point nuts.

