SpeedFactory Racing 4140 Head Stud Kit
SpeedFactory Racing 4140 Head Stud Kit
SpeedFactory's Racing 4140 Head Stud Kit for Honda/Acura B & K Series (B16A, B18C1, B18C5, B20VTEC, LSVTEC, K20, K24) is designed to handle forced induction applications up to 800+HP and features oversized forged 9/16” 12-point nuts and hardened parallel ground washers for greater structural load distribution than the 1/2" nuts and washers most use. Hex broaches on the tops of the studs make installation easy, whilst the dog point design seats the stud in the block and preloads the fastener for reliable torque force. Each kit contains 4140 head studs, nuts, washers and ARP Ultra-Torque Assembly Lubricant, and boasts a tensile rating of 210,000 psi and a black oxide coating to resist corrosion. Does not fit K24Z7 or full B18A/B without a VTEC head.