Header Bolt Kit For Oldsmobile 330-455 cid Black Oxide Hex Head

Header Bolt Kit For Oldsmobile 330-455 cid Black Oxide Hex 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.

The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating

so that’s why ARP came up with these super tough bolts

and copy down the length of the fastener prior to and after installation

Premium quality 8740 and ARP2000® head stud kits are availablefor most domestic and import applications

Specially drilled “NASCAR” models are available for those who wish to safety wire their header bolts to prevent loosening

and meet theARP “ZERO defect – ZERO failure” quality standard

They’re made from 8740 chrome moly steel

This helps prevent blown head gaskets

There are many important reasons to use ARP main stud kits

ARP offers a special version of its rugged 190

000 psi range

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