GM 12P Rear Axle Kit

The Zumbrota Drivetrain ZA K630840 is a comprehensive rear axle kit engineered for vehicles equipped with a GM 12P differential. This kit is designed to provide a direct replacement or upgrade solution, featuring 30 splines for robust engagement and a 5x4.75 inch bolt pattern for secure wheel mounting. The axle shaft itself measures 31.375 inches in length, ensuring proper fitment within the specified differential housing. Each kit contains all the necessary components for a complete installation, including the axle shaft, a new wheel bearing, a seal, a differential cover gasket, studs, and lug nuts. The manufacturing process utilizes advanced heat-treating techniques, resulting in an axle that is not only stronger but also more durable for long-term performance. This ensures that the part is designed and built to meet or exceed the original equipment manufacturer's quality standards, providing reliability and peace of mind. As a USA Standard Gear product, this axle kit benefits from a commitment to quality and performance in drivetrain components. This particular kit is specified for the rear axle and the left-hand (LH) side. While fitment information is available via the 'Select Vehicle' option, the core specifications indicate compatibility with the GM 12P differential, 30 spline count, and the 5x4.75 inch bolt pattern.