Seal

Maintain your Chevrolet, Buick, GMC, or Cadillac vehicle with a Genuine GM Parts Thermostat Bypass Pipe Seal. Only Genuine GM Parts are tested to meet GM Original Equipment standards and are designed specifically to fit your vehicle.
Designed, engineered, tested, and warranted for GM vehicles
Precise fit for ease of installation
For proper installation, locate your nearest GM dealer, independent service center, or body shop