ARP 671-1016 Metric Thread Bolt Kit M8 x 1.25 x 12mm 12pt black oxide bolts ymm_34 you may choose between conventional

you may choose between conventional hex style or the space-saving 12-point nuts

000˝ Thread Size 1/4-20 washers included

the Valve Actuator Kit (P-HF985) is not required

The use of lightweight materials and a different configuration reduces the overall weight of the exhaust by 9

This helps prevent blown head gaskets

ARP 671-1016 Metric Thread Bolt Kit M8 x 1.25 x 12mm 12pt black oxide bolts ymm_34 you may choose between conventionalSpecifications Socket Size(s) 10mm 12pt UHL 12mm Thread Length 12mm Grip Length n amm Thread Diameter Spacing M8 x 1. 25mm Grip Diameter 8mm Wrenching 10mm Head Height 7. 4mm Collar Diameter 15. 0mm