Description
BMW S63 Head Studs ARP Head Stud Kit 201 4702 201 4703 Material:Custom Age 625+ Step 3: Tighten to 85 BMIVN 1037 Exhaust Valve Diameter Length Material:33 mm 126.1 mm Black Nitride PFR5 4612 1994 1996 E34 518i Step 3: Tighten to 85 ft lbs cooler piston crown contributes to more consistent and complete combustion