Gabriel 61528 ProGuard Shock for select Chevrolet/GMC/Isuzu/Oldsmobile models Engineered for comfort and control in trucks, vans and SUVs, chromed rod Engineered for comfort and control in todays trucks, vans and SUVs Piston seal reduces oil by-pass for maximum shock control and performance Larger reservoir tube provides better cooling for longer life Low friction oil seal for greater comfort and longer shock life