This 2001-2007 Chevy Silverado 2500HD OEM rear axle assembly features a robust 11.5-inch full-floating axle with a 3.73 gear ratio (RPO code GT4). Engineered for heavy-duty performance, this axle is built to handle demanding towing, hauling, and high-load applications while providing durability and reliability. The full-float design enhances safety and load capacity by allowing the axle shaft to be removed without supporting the vehicle’s weight, making it ideal for serious work trucks.
This is a complete, lot-tested OEM assembly, ensuring direct bolt-in compatibility for compatible Silverado 2500HD models. It includes the housing, differential carrier, and axle shafts, ready for installation. The 3.73 ratio offers a practical balance of low-end torque for pulling power and stable highway cruising.
Key features include the factory GT4 code, full-float architecture, and proven durability for high-mileage use. This axle provides a cost-effective solution for restoring your Silverado’s rear-end strength and functionality without the expense of a new assembly. Ideal for owners who rely on their truck for heavy-duty tasks and need dependable, OEM-grade performance.