BMW B46 Valve Springs by SuperTech Seat Pressure:84 lbs Avionics-quality hard chrome plating for

Avionics-quality hard chrome plating for better heat and wear resistance

and high-performance street builds

including the 6061 aluminum oil line fittings and the 303 stainless steel tie-down plate

It is only required when you are wanting to change boost settings with a tuning device such as JB4 or Motiv boost box

For higher RPM builds and increased durability

BMW B46 Valve Springs by SuperTech Seat Pressure:84 lbs Avionics-quality hard chrome plating forSupertech Valve Springs for the BMW B46 engine are engineered for high performance builds that demand reliable valvetrain control at high RPMs. Whether you're chasing power on the street or building for track duty, these springs are designed to reduce valve float, improve stability, and maintain precise valve operation under extreme conditions. Developed with advanced materials and exacting tolerances, Supertech valve springs offer significantly