Cooling Parts for Jeep CJ6
Water Pump, Thermostat, Radiator & Hoses for Reliable Engine Cooling (1955–1975).
Why the Cooling System in the Jeep CJ6 Needs Special Attention After Decades.
The cooling system of the Jeep CJ6 keeps the four-, six-, or eight-cylinder engine within its optimal temperature range regardless of model year – on a vehicle built between 1955 and 1975, wear and corrosion are by now normal on virtually every component. Water pumps lose output through worn bearings and seals, while the gaskets themselves become porous with age and let coolant escape. Thermostats no longer open and close precisely after decades of use, leading to overheating or overcooling, and the matching housing gaskets harden. Radiator hoses crack or swell, radiators clog internally and lose cooling capacity externally as the fins corrode, and fan clutches lose their temperature-controlled function. Radiator caps, too, no longer hold system pressure reliably. Anyone driving their CJ6 off-road or on longer summer trips should inspect the complete cooling system especially regularly.
- Water Pump & Gasket: The water pump and the matching water pump gasket for engines ranging from 4-134cui to the 5.0/5.9L V8.
- Thermostat & Housing: The thermostat with an 82° opening temperature and the thermostat housing gasket for common CJ6 engine variants.
- Radiator Hoses: The lower radiator hose and the upper radiator hose, fitting both six- and eight-cylinder engines.
- Fan Clutch & Fan Blade: The fan clutch regulates fan speed based on temperature, while the fan blade ensures sufficient airflow.
- Radiator & Cap: The 3-core radiator and the matching radiator cap keep the system tight and efficient.
American Engineering for Reliable Cooling.
Nearly the entire range – water pumps, thermostats, radiator hoses, radiators and fan blades – comes from Crown Automotive, one of the best-known names in Jeep parts in the USA. Gates supplies water pumps and thermostats in OE quality, while the thermostat housing unit for the 3.8L and 4.2L engines comes from Dorman. All three brands stand for American engineering and decades of experience in the US vehicle market.
Your Partner for CJ6 Cooling System Repairs.
Whether you need a single gasket or a full cooling system overhaul, we're happy to advise you on thermostat opening temperatures, coolant mixtures, and the right sequence for replacing the water pump and hoses, including compatibility questions for the related CJ5, CJ7, and CJ8 models. Most items ship from stock within a short lead time.