ARP Head Bolts tein Also know as contact reduction

Also know as contact reduction grooves

Unlike the common method of modifying the OEM unit which can often lead to failure and engine damage these are 5axis CNC milled from a solid billet of aluminum to make failure impossible

efficient brazed aluminium core

Designed to replace the factory rain tray to give increased cooling yet still blocking off complete view into the engine bay

ARP Head Bolts tein Also know as contact reductionProduct Description ARP Head Bolt Kit Toyota 1. 3L 1. 5L 4EFTE 5EFE These ARP High Performance series head bolt kits are tough! They are rated at 170,000 psi 15 percent stronger than Grade 8 fasteners. They come available with hex heads or reduced wrenching 12 point heads that eliminate the need for valve train removal when re torquing cylinder heads.