Car Expansion Tank Cap, 15PSI Cooling Radiator Reservoir Cap, OE #15075118 Modification Accessories, Compatible with GM Chevy Buick Hummer (Black)

1. It replaces the original part number 15075118 for a perfect fit.2. It seals tightly to help prevent coolaing fluid leaks and maintain pressure.3. It has a safety valve to release excess pressure and protect the system.4. It is easy to install by hand thanks to its gear-shaped design.5. It helps keep the cooling system closed and functioning properly.

• Direct OEM Fit: This radiator pressure cap is a direct replacement for OEM part number 15075118. It is compatible with many GM vehicles including Chevy, Buick, and Hummer models. Confirm your car model before purchase.
• Seal & Leak Prevention: The cooling water tank cap is maded with high-quality sealing materials to prevent cooling fluid from leaking. It maintains proper system pressure and temperature, and is designed to withstand high heat for a long service life.
• Pressure Relief Valve: The radiator cap features an integrated safety valve that automatically releases excess pressure at a certain level. This helps protect your vehicle's cooling system from damage due to overpressure situations.
• Maintains System Integrity: The cover keeps the cooling reservoir properly sealed to prevent evaporation and loss of antifreeze. This helps the cooling system store coolant efficiently and improves the radiator's overall heat dissipation capacity.
• Easy-Grip Design: The cap has a gear-shaped top that is easy to grip and tighten by hand. Installation is tool-free—simply remove your old or damaged cap and screw this one on securely.