HEAD STUD KIT DODGE CUMMINS 5.9L 12V 8998 CUSTOM4140 STUDS PARELLEL GROUND WASHERS 12PT NUTS

PRW uses premium grade 4140 Alloy Steel. Their studs are specially heat-treated to 200,000 psi, ensuring total heat penetration for a stronger, more superior stud. To ensure perfect alignment with gaskets and cylinder heads, PRW studs are centerless ground after being heat-treated, resulting in remarkably straight and concentric studs. The studs are then thread-rolled for better fatigue strength compared to processing before heat treatment. PRW also offers specially undercut studs for several engines (done only to the shorter studs) to equalize the stretch of both studs, making for a more consistent clamping force that compensates for head gasket compression. This helps prevent blown head gaskets and assures optimum engine sealing. These premium quality heat-treated 4135 chrome moly steel head stud kits are available for most domestic and import applications. Each stud is stamped with "PRW" and comes with 12-point nuts and PRW CMD Extreme Pressure Assembly Lube (0.5oz Packet).