Cylinder Head Studs for BMC 2.1L TR4, 12-pt Nuts

Cylinder Head Studs for BMC 2.1L TR4, 12-pt NutsIt is for good reason that virtually every top professional enginebuilder relies on ARP Pro Series head studs for their all out competitionpowerplants. Simply stated, theres not a better stud setupon the market today. For openers, ARP only uses premium grade 8740 alloy anda proprietary ARP2000 alloy that are rated far superior to aircraftquality alloy steels. Secondly, each stud is placed verticallyinto special racks and precisely heat treated to

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

000 psi tensilestrength material and proprietary (ARP2000®) 220

and 1 inch sizes

three thicknesses and two are in ARP stainless

These features combine to enable ARP shafts to handle the added torque requirements of increased capacity oil pumps or heavy viscosity lubricants

marine and drag racing engines – including those with superchargers and/ or nitrous oxide injection systems – ARP offers replacement rod bolts in three different models

Finish: Cad

substantially stronger than Grade 8 hardware

000 psi forthe 8740 material and 220

Ford GM 10- & 12-bolt rear ends to the beefy Strange differentials found in Top Fuel and Funny Car applications

All High Performance Series bolts are 180

or if there is deformation