Spring Seat Protector MOOG Front Upper Coil Spring Insulator For 1992-2000 Chevrolet C3500 Oz Chevrolet C1500 Suspension Part Protects spring and spring seat from damage MOOG® K160042 - Rear Lower Coil Spring Insulator Country of Origin : China If you're changing out your coil springs, then you'll need a set of these Moog coil spring insulators. They're manufactured from thick, durable rubber to insulate against the vibration caused by suspension travel Moog is the preferred steering and suspension brand of professional technicians and NASCAR Crew Chiefs. GM Genuine Parts Front Coil Spring International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.