Main Stud Kit for Dodge Dodge/Cummins 3.9L 4BT, ARP2000

Main Stud Kit for Dodge Dodge/Cummins 3.9L 4BT, ARP2000There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs

As the crankshaft flexes and twists

Far superior to OEM fasteners

Special ARP Pro Series NASCAR type stud kits have one of the studs drilled to facilitate sealing the carburetor in the engine by race officials

They’re forged from premium grade 8740 chrome moly steel and are heat-treated to a nominal rating of 190

and monitor overall length during installation

ARP has you covered with our 180

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 the need for valve train removal during cylinder head retorquing

Our kits come in 8470 or polished ARP Stainless and cover spacers up to 3

Not to be usedwith OEM-style

each stud is placed verticallyinto special racks and precisely heat-treated to 190

000 psi tensile strength material and proprietary (ARP2000®) 220

They’re made from premium grade aerospace chrome moly and centerless ground to precise diameter