Restore your Chevrolet, Buick, GMC, or Cadillac vehicle as close to its original condition as possible with a Genuine GM Parts Catalytic Converter Seal. This seal helps prevent exhaust leakage from your vehicles catalytic converter and helps guide exhaust to the exterior of your vehicle. Only Genuine GM Parts are tested to meet GM Original Equipment standards and are designed specifically to fit your vehicle. WARNING: Cancer and Reproductive Harm