The GABRIEL G63306 Ultra Rear Shock Absorber is engineered to enhance the suspension performance of Chevrolet and GMC vans, including models like the G10, G20, G30, and their respective van variants from 1970 to 1977. This shock absorber is designed to provide a smoother, more comfortable ride by effectively controlling the vehicle's motion and maintaining optimal tire contact with the road surface. Its construction features a 1 3/8-inch bore piston with bonded iron, ensuring durability and a longer service life. The leak-proof piston seal and rod guide eliminate oil bypass, while the orifice control disk with variable nine-stage valving ensures consistent oil flow, contributing to reliable ride control across various road conditions. The OE-design single-lip oil seal minimizes friction, enhancing comfort and performance. Additionally, the chromed piston rod offers superior corrosion resistance and improves sealing properties, extending the shock absorber's lifespan. The larger, bulged tube design aids in cooling, further enhancing performance. With an extended length of 19.85 inches, a collapsed length of 12.57 inches, and a stroke length of 7.28 inches, the G63306 is tailored for specific Chevrolet and GMC van models, ensuring a precise fit and optimal performance. This shock absorber is sold individually and is backed by Gabriel's one-year warranty covering manufacturing defects.