Header Bolt Kit For Chevrolet 3/8˝ dia. bolt, drilled, 3/8˝ wrench Stainless 12-Pt Head

Header Bolt Kit For Chevrolet 3/8˝ dia. bolt, drilled, 3/8˝ wrench Stainless 12-Pt HeadARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12 point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the pplication. Whats more, the compact 12 point inut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut starter nose that helps prevent cross threading.

HIGH PERFORMANCE SERIESHigh Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates theneed for valve train removal to facilitate cylinder head retorquing

What’s more

Material 2: ARP2000

They are both forged from aerospace alloy and heat-treated prior to thread rollingand machining

low-profile design

These pump drives feature a CNC milled (not broached) hex

That’s whythe fastener experts at ARP have developed special bolts that are far superior to OEM hardware

Available in both High Performance and Pro Series kits

Cycle testing hows ARP High Performance rod bolts to be nearly five times more reliable than stock bolts

It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of 220

Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength

All Pro Series head bolts have areduced wrenching hex or 12-point head and wide area flange to permit the use of larger diameter valve springs and eliminate theneed for valve train removal during cylinder head retorquing