SuperTech valves deliver exceptional precision and reliability for BMW's iconic inline-six engines

87 mm bore size for 3460 cc displacement

They are designed to replace BMW part #11247834437

This is especially important for high-performance

Supports up to 9500 RPM

ARP Head Stud Kits, BMW Engines X4 SuperTech valves deliver exceptional precisionBMW ARP head studs are high strength fasteners designed to secure the engine's cylinder head to the engine block. These studs are typically made of high quality materials such ARP2000, L19, Inconel, and Custom Age 625+, which provide exceptional strength and durability. ARP head studs are commonly used in high performance, racing, and forced induction BMW engines where increased cylinder pressure and higher operating temperatures can put excessive