ARP Hex Head Engine and Accessory Fastener Kit Chromoly Black Oxide Ford Cleveland/Modified - Kit 916190 then allow the nuts to

then allow the nuts to be easily installed without the worry of cross-threading

Lengths stated are overall end-to-end

which supersedes M2C153-H requirements

which directly relates to performance

drain petcock

ARP Hex Head Engine and Accessory Fastener Kit Chromoly Black Oxide Ford Cleveland/Modified - Kit 916190 then allow the nuts toARPs 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: Engine and Accessory