VW Ring Gear Bolt Kit - 10mm 02A

The ARP VW Ring Gear Bolt Kit - 10mm 02A is a precision fastener set engineered for Volkswagen O2A transaxles where ring gear attachment demands absolute reliability and zero tolerance for failure. Originally developed for high-performance and restoration work on vintage VW platforms, this 8-piece stud kit addresses the critical need for properly rated, corrosion-resistant fasteners at the ring gear interface. Whether you're rebuilding a stock transmission or upgrading to higher-output powerplants, fastener quality at this junction directly affects driveline integrity and longevity.

Each stud measures 10mm diameter with a 1.25-inch thread pitch and 1.18-inch working length, paired with 12-point nuts for optimal clamping geometry and stress distribution. ARP's chromoly construction with black oxide finish provides superior tensile strength compared to OEM fasteners while resisting corrosion and galling during installation and disassembly cycles. The 12-point nut design reduces fastener slippage under vibration and thermal cycling—critical when ring gear loads transmit shock loads through the differential carrier during acceleration, engine braking, and cornering.

Technicians and builders working on Volkswagen 02A transaxles—from street-driven GTIs to track-focused builds—rely on this kit to replace worn, stripped, or inadequate OEM studs that compromise gear preload and alignment. Proper installation requires following ARP's torque specifications to ensure even load distribution and prevent differential side effects like gear chatter or premature wear. This is a must-have consumable for any serious transmission rebuild, offering the precision and durability expected by professionals who demand zero margin for error in drivetrain assembly.