Wheel Stud Kit - M12x1.5 1.850/.485 Knurl

The Wheel Stud Kit - M12x1.5 1.850/.485 Knurl by ARP is a critical fastening component for serious automotive builds where factory studs fall short. Whether you're upgrading to larger brakes, running extended-offset wheels, or building a high-performance engine bay, quality wheel studs determine the integrity of your entire wheel assembly. ARP studs are engineered for maximum clamping force consistency and vibration resistance, making them the choice for enthusiasts and professional shops tackling forced induction, track duty, or heavy-load applications.

This M12x1.5 metric specification features a precision-knurled shank (.485" knurl diameter) and 1.850" effective length, engineered to distribute load evenly across the wheel hub interface and minimize fatigue cracking under dynamic stress. The knurled design prevents stud rotation during installation and service, a common failure point with smooth studs under repeated thermal cycling. ARP manufactures these from premium chrome-moly alloy steel and applies proprietary heat-treat protocols to guarantee consistent tensile strength and ductility—critical for holding clamp loads in the 90,000+ psi range without thread stripping or seizure.

Builders upgrading from OEM studs benefit immediately from reduced wheel runout, improved brake response, and confidence under sustained cornering or towing loads. Installation requires a press or stud installer tool; verify hub bore diameter and thread pitch compatibility with your specific platform before ordering. These studs work across a broad range of domestic and import platforms using M12x1.5 fastening standards, making them suitable for muscle cars, JDM conversions, truck builds, and endurance racing applications.