BorgWarner AL203494 Viscous Fan Clutch Assembly

This viscous fan drive clutch provides variable-speed cooling fan operation for John Deere 6068 series diesel engines. The unit utilizes a thermally controlled bimetallic spring to modulate fan speed based on radiator inlet temperature, reducing parasitic engine load and noise during low-heat conditions. Constructed with a sealed silicone fluid chamber and precision-machined aluminum housing, the clutch mounts directly to the engine water pump or fan drive hub via a standard four-bolt flange pattern. It replaces John Deere OEM part numbers AL203494, AL209358, and AL213600. Designed for heavy-duty agricultural applications including row-crop tractors and self-propelled sprayers operating in high-debris environments. Cross-references include aftermarket numbers AM20006486M, 58737, DN-AL213600N-N, and AP Air 15-6006. Verified fitment spans John Deere 6190R, 6195R, 6210R, 6215R, 6195M, 6M220 tractors and R4040i, R4050i, R4140i, R4150i sprayers.