B38 Main Stud Kit by ARP

The BMW B38 engine is compact, turbocharged, and capable of impressive performance, but its factory main bolts are a weak point when power levels increase. The ARP Main Stud Kit upgrades your B38 engine with race-proven studs, providing superior clamping force, block stability, and protection under extreme conditions.Key Benefits of ARP Main Studs for the B38: Uniform Clamping Force: Ensures even pressure across main bearing caps for precise crank alignment and long-term reliability Improved Block Stability & Rigidity: Maximizes power transfer, improves throttle response, increases horsepower and torque Prevents Main Cap Walk: Keeps main caps securely in place, protecting crankshaft and engine integrity Reduced Fastener Stretch: High-quality ARP studs resist deformation under high RPM and high-load applications Protects Engine Block Threads: Precision machining and unmatched tensile strength reduce risk of stripped or deformed threads Whether building a BMW i8, 118i, 218i, or