Please note that these 141

(12) Exhaust Valves

with ARP Ultra-Torque fastener assembly lubricant

Supertech valve spring kits are favored by performance enthusiasts

G30 540i xDrive (B58A 2017-2019)

BMW N54 Valve Springs by SuperTech Seat Pressure:75 lbs Please note that these 141Designed to meet the demands of high performance applications, Supertech valve spring kits are favored by performance enthusiasts, engine builders, and professional racing teams alike. These kits are compatible with various N54 applications, including racing and performance street builds, delivering optimal performance at high RPMs. Crafted from high quality materials, Supertech valve springs are built to withstand the intense conditions of high