4R75W Pump, remanufactured and ready to install. Fits the 4R75W. Ships fast from the USA.
The 4R75W is the heavier-duty member of Ford's 4R70W family, and when its front pump wears out the whole transmission feels it: a long pause before Drive or Reverse engages, slipping that gets worse as the fluid heats up, and a whine that rises and falls with engine speed. This remanufactured 4R75W pump replaces the worn assembly with a bench-ready unit, so you are not trying to resurface gears and fit a bushing in your driveway.
The 4R75W shares its case and basic hydraulic layout with the 4R70W, with stronger internals for heavier vehicles. The pump is a gear-type pump driven by the torque converter hub. Its inner and outer gears turn whenever the engine runs, drawing fluid through the filter and sending it to the pressure regulator valve in the valve body, which sets line pressure for every clutch, band and the converter. The pump assembly also carries the stator support, and in this design the forward clutch is fed from the front of the unit through the sealing rings on that support. A pump that has lost volume therefore shows up first as a lazy forward clutch, then as low pressure everywhere.
Gear clearance is what decides pump output. Sonnax's rebuild instructions for this family call for checking pump pocket and lobe-to-lobe clearance after a new bushing is fitted, and note that excessive lobe clearance means low pump volume and low cooler flow, which kills the converter and the gear train. That is the main reason to install a reconditioned pump rather than reuse a high-mileage one inside a fresh rebuild.
Put a gauge on the line pressure tap before you buy. If pressure is low in every range and does not climb with throttle, the pump is a suspect, but so is the pressure regulator circuit. This family is well known for PR valve and bore wear, which also drops line pressure and has nothing to do with the pump. Our 4R70W and 4R75W problems guide walks through separating a pump failure from PR valve wear and the forward/direct cross-leak. A whine that tracks engine speed, bronze bushing material on the pan magnet, or scoring on the converter hub all point toward the pump itself.
This listing covers the 4R75W pump without a specific year range, so confirm it against your transmission before you order. The family changed over its run: ATRA's interchange notes show that the 4R70E/4R75E versions use thinner plastic forward sealing rings on the stator support than the cast iron rings on the W units, and the E center support is notched for a turbine speed sensor. Pull the identification tag or check the door sticker transmission code, compare the stator support and pump body to your old unit, or send us your year and VIN and we will match it. If your truck is a 2004-2008 unit, also compare against our 4R75W pump for 2004-2008. You can browse the full range on the 4R70W and 4R75W parts page.
When low pressure turns out to be a worn regulator bore instead, the fix is in the valve body, such as our 4R75W valve body for 2005-2008, not another pump.
| Fits | 4R75W |
| Part type | Pump |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 4R75W and 4R70W share the case and pump mounting, but stator supports and sealing rings changed across the family, especially between W and E versions. Compare the stator support to your old pump or send us your year and VIN before ordering.
Read line pressure with a gauge. Low pressure plus pump whine, bushing material on the magnet or a scored converter hub point to the pump. Low line rise with throttle and no noise is often a worn pressure regulator bore in the valve body.
MERCON V. Prime the pump with it before the first start and set the level hot. Do not substitute MERCON LV, SP or ULV; Ford lists those as separate fluids that are not interchangeable with MERCON V.
Inspect it at minimum. A worn pump bushing usually comes from hub wear or debris, and a grooved hub will destroy the new bushing and seal. If the old pump starved cooler flow, the converter may already be heat damaged.
There is no pump-specific relearn. Clearing codes and resetting adaptive values with a scan tool after major repair work lets the computer relearn shift feel, and a road test with the fluid at full temperature confirms engagement and pressure.
