Cylinder Head Bolt Kit for Chevrolet 18° standard port with undercut bolts

Cylinder Head Bolt Kit for Chevrolet 18° standard port with undercut boltsAll Pro Series bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining, and meet theARP ZERO defect ZERO failure quality standard. ARP Pro Series head bolt kits are application specific and designed to deliversuperior strength typically associated with competition engines. Pro Series kits are available in standard (8740) 190,000 psi tensilestrength material and proprietary (ARP2000) 220,000 psi tensile

are stronger and ratedat 190

You can choose between black oxide finished 8740 chrome moly or corrosion-resistant stainless steel

The nuts feature a wide base for better load distribution and sealing

You’ll note that the studs have a radiused bullet nose that serves to locate the pan rails

Specially hardened

Our special purpose washers are constructed from either premium chrome moly with a black oxide finish or polished ARP stainless steel and are hardened and parallel-ground

Material 2:

has been applied

They’re made from 8740 chrome moly steel

valve covers

and rear axle housings

You will note that ARP studs feature a special “bullet nose” to guide the nut accurately into place