1966 GMC L3500 Thermostat Housings & Filler Necks
- Cometic Gasket®0.47" Fiber Engine Coolant Thermostat GasketGMC L3500 5.0L 1966, 0.47" Fiber Engine Coolant Thermostat Gasket by Cometic Gasket®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$1.13