ARP BMC Rod Bolt Kit - Fits A-Series Engines 89401A An Allen head bolt prevents

An Allen head bolt prevents distributor from turning in the clamp so distributor can be removed and reinstalled without resetting the timing

1978-1983 Mercury Zephyr

Funny Car Window

and adapter fitting with 1/8"NPT threads

ARP BMC Rod Bolt Kit - Fits A-Series Engines 89401A An Allen head bolt preventsARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Connecting Rod Bolt Kit