Gates 44084HD water pump for the 1985-1992 Western Star 4900 Series L6-14.0L truck and other vehicles circulates coolant through the engine to carry heat away. The HD suffix in the part number marks this Gates water pump as a heavy-duty unit.
A coolant leak at the pump, a rough or noisy bearing or an engine that runs hot can mean the water pump is wearing out. A stuck thermostat, a leaking hose or a weak radiator can run an engine hot too, so find the cause before you buy a water pump.
The vehicles it fits include the 1985-1992 Western Star 4900 Series L6-14.0L truck, the 1990-1992 Western Star 5900 Series L6-14.0L truck and the 1989-1992 Western Star 6900 Series L6-14.0L truck, along with many others.
Fit and size
Build and materials
One water pump with its pulley. This listing holds one water pump, and the fitment calls for one per vehicle. The back housing, the thermostat and housing, and the fan clutch are not included.
Does this water pump fit the 1990-1992 Western Star 5900 Series L6-14.0L truck?
Yes. The Gates 44084HD fits the 1990-1992 Western Star 5900 Series L6-14.0L truck and many other vehicles. If your truck is not named here, look up its year and model in the "Vehicles it fits" section.
Does the Gates pump come with its pulley?
Yes. Gates 44084HD comes with its pulley. The back housing, the thermostat and housing, and the fan clutch are not included.
What are the housing and impeller made of on this HD water pump?
The housing is cast iron and the impeller is stamped steel. The pump is driven by an accessory belt, not the timing belt, and has two outlets.
How do I tell if the bearing or seal on my water pump is failing?
A coolant leak at the pump or a rough, noisy bearing can mean the seal or bearing is wearing out. Look for leaks and shaft play with the engine off and cool; a shop can test the cooling system.
How is each Gates 44084HD tested?
Each new pump gets a 100 percent functional test of its unitized bearings and seals, plus a 100 percent leakage test of both the casting and the assembled pump.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
