Drawn over mandrel (DOM) pressure cylinder for a smoother surface and less resistance, resulting in increased service life ACDelco Advantage Shock Absorber is an economical replacement component for one or more of the following vehicle systems: steering and suspension ACDelco Advantage Gas Charged Shocks are tested to ensure vehicle fit and quality ride. Rear Gas Shock Absorber by ACDELCO - 520-180 ACDelco Gas Charged Shock Absorbers ACDelco 520-432 Advantage Gas Charged Rear Shock Absorber Car Van Light Truck Replacement Shocks This minimizes leak paths for a longer, more consistent, product life. Product: ACDelco Advantage 520-180 Gas Charged Rear Shock Absorber, Part Number: 520-180, made by ACDelco. Information about country of origin, manufacture or assembly. Manufacturing locations Piston seal adjusts as it wears to maintain a tight seal between the piston and pressure tube. Super-finished chromed piston rod inhibits corrosion and provides a more consistent wear surface
