This ARP thermostat housing bolt kit is built for Small Block Ford engines. The bolts feature a 5/16 in male thread, measure 0.875 in long, and use hex heads, machined from chromoly steel with a black oxide finish.
Specifications:
- Thread: 5/16 in Male
- Length: 0.875 in
- Head Style: Hex
- Material: Chromoly Steel
- Finish: Black Oxide
- Quantity: Kit
- Part Number: 150-7402
Applications:
- Small Block Ford
FAQ
What engines does this thermostat housing bolt kit fit?
It's designed for Small Block Ford engines.
What size are the bolts?
5/16 in male thread, 0.875 in long.
What head style do they use?
A hex head.
What material are the bolts made from?
Chromoly steel with a black oxide finish.

