ARP 201-4605 Head Stud Kit for BMW 2.3L (S14) 4-cylinder ymm_81 leak-proof seal

leak-proof seal

further enhancing both torque and power output

the exhaust has been designed to deliver both power and torque gains throughout the rev range

This spacer is designed for use with O2 sensors

ARP2000: ARP2000 is an alloy steel that can be safely heat treated to a higher level

ARP 201-4605 Head Stud Kit for BMW 2.3L (S14) 4-cylinder ymm_81 leak-proof sealIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, theres not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat treated to 200, 000 psi. This procedure ensures complete heat