Four Season 36949

Four Seasons 36949 is a new non-thermal radiator fan clutch for selected classic and older American vehicles. Its non-thermal design provides a speed-related drive characteristic without a bimetal valve responding to air temperature behind the radiator.

Application / fitment

The part is catalogued for numerous AMC, Buick, Cadillac, Checker, Chevrolet, Chrysler, GMC, International, Jeep, Oldsmobile and Pontiac models. Confirm fitment by pilot diameter, bolt patterns, thread and fan rotation.

• selected Chevrolet Camaro, Malibu, C/K, K30 and classic passenger-car applications
• selected Pontiac Firebird and Grand Prix applications
• selected Buick Regal and other GM vehicles
• selected Jeep, AMC, Chrysler and commercial applications

The clutch is listed for selected standard- and reverse-rotation systems, but this does not make it universally interchangeable. Compare all dimensions with the removed clutch.

Technical information

• type: non-thermal fan clutch
• rotation: standard or reverse in catalogued applications
• maximum diameter: 7.20" / 182.9 mm
• overall height: 3.09" / 78.5 mm
• mount diameter: 2.60" / 66.0 mm
• pilot diameter: 0.63" / approximately 16.0 mm
• pilot depth: 1.03" / approximately 26.2 mm
• fan bolt circle: 3.25" / 82.6 mm
• mounting holes: 4
• bolt thread: 5/16"-18
• body material: aluminium
• mounting hardware: not included
• UPC: 096361369498
• sales unit: 1 piece

Inspect the water pump, fan and shroud and check rotating-component runout before installation. Fan blades must not contact the shroud or other engine-bay components.