This ARP main stud kit replaces factory main bolts with studs and hex nuts for Big Block Buick engines with 2-bolt main caps. Studs are machined from chromoly and finished in black oxide.
Specifications:
- Type: Main Stud Kit
- Nut Style: Hex Nuts
- Main Cap Style: 2-Bolt Mains
- Material: Chromoly
- Finish: Black Oxide
- Quantity: Kit
- Part Number: 125-5401
Applications:
- Big Block Buick
FAQ
What engine does this main stud kit fit?
Big Block Buick engines with 2-bolt main caps.
What nut style is included?
Hex nuts.
What material are the studs?
Chromoly steel, black oxide finish.
Does this fit 4-bolt main engines?
No, this kit is designed for 2-bolt main caps.

