Ferrea offers an expertly engineered solution designed to eliminate common issues like binding

They are designed to replace BMW part #11247834437

45mm Intake / 10

This is especially important for high-performance

Inner Spring ID: 14

ARP Head Stud Kits, BMW Engines X4 Ferrea offers an expertly engineeredBMW 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