Thermostat Seal 14-22 Chevy 5.3L 6.2L

The Thermostat Seal 14-22 Chevy 5.3L 6.2L is a precision water neck gasket engineered for Chevrolet's modern GenV LT-series engines. This rubber seal sits at the critical junction where the water neck connects to the engine block, preventing coolant leaks that can lead to overheating, corrosion, and catastrophic engine damage. Whether you're performing routine maintenance, rebuilding an engine, or addressing a weeping coolant leak, this thermostat seal is an essential component for reliable operation.

Manufactured as a rubber gasket with a 0.3-inch thickness, this seal is designed to withstand the thermal cycling and pressure fluctuations inherent in modern engine cooling systems. The 0.3-inch profile provides optimal compression and sealing force when properly torqued, creating a reliable barrier against coolant seepage at the water neck interface. The compact dimensions (5.1 x 0.65 x 7.55 inches) allow for direct installation without modification, and the lightweight construction (0.035 lbs) ensures it integrates seamlessly into your engine assembly without adding unnecessary mass.

This thermostat seal is ideal for anyone rebuilding or servicing a 2014–2022 Chevrolet equipped with a 5.3L or 6.2L engine, including trucks, SUVs, and performance vehicles relying on the GenV LT platform. During any water neck removal—whether for thermostat replacement, radiator hose service, or upper intake gasket work—always install a fresh seal to prevent future cooling system issues. Always consult your vehicle's service manual for proper torque specifications and installation sequence to ensure a watertight fit that will last for years of reliable service.