Upgrade to SuperTech valves for the ultimate performance in your E36 M3

making them an essential addition to your performance upgrade

with the etched arrow on the dome pointing toward the major thrust side of the piston

2011-15 BMW F31 328i / 328ix

The internal depth of these fuel cells is 11

ARP Harmonic Damper Bolt Set, BMW S58 Coupe Upgrade to SuperTech valves forBMW OEM damper bolts are grade 10 and Torque to Yield, designed for one time use. While this is adequate for factory power levels, these bolts fall short when power levels are increased. 5150 AutoSport has observed damper bolts coming loose and breaking, leading to engine and crank damage, as well as improper torque load between bolts. The factory bolts are simply not sufficient for those planning to run above factory power levels. 5150 AutoSport