4R75W Pump 2004, used and ready to install. Fits the 4R75W. Ships fast from the USA.
This is a used factory front pump for a 2004 Ford 4R75W, the heavier-duty member of the 4R70W family that Ford began calling the 4R75E that model year. Buyers usually land here with a 5.4L truck or a full-size Ford that now waits a second or two before Reverse bites, feels loose in every gear once the fluid is hot, or has a whine that climbs with the tachometer even in Park. Swapping a known-good OEM pump is a cheaper route than a remanufactured unit when the rest of the transmission is still healthy. It carries a 1-year warranty and ships from the USA.
The torque converter hub drives the pump gears directly, so the pump is turning whenever the engine is. Its output is the only source of line pressure for the clutches and bands, converter charge, cooler flow and lube. In this family the pump assembly also does two other jobs: the pump body holds the intermediate clutch piston, and the stator support bolted to it carries the forward clutch feed past sealing rings on its snout. A worn pump therefore shows up first as weak engagement and heat, and a leaking intermediate piston shows up as a soft or flared 1-2 shift.
The 2004 model year is the dividing line. Transmission Digest reported that Ford introduced the 4R70E and 4R75E at the start of 2004 production, with 5.4L trucks getting the 4R75E and the only difference between the two being a hardened planetary carrier. ATRA's interchange notes add that the 2004-up pump body uses a larger bonded rubber intermediate piston instead of the earlier aluminum piston, and that the late stator support uses thin plastic forward sealing rings where the older 4R70W used cast iron rings.
Pull codes before you pull the transmission. The 2004 unit added a turbine shaft speed sensor and moved the output speed sensor to the ring gear park lugs, and a speed sensor or ratio fault can make a good pump look guilty. Next, put a gauge on the line pressure port and check idle and stall pressure in Drive and Reverse. Low in every range points to the pump. Normal at idle but no rise under load points to pressure regulator valve and bore wear, which Sonnax documents on this family and our 4R70W and 4R75W problems guide explains. Expedition owners can follow the Expedition shift problems guide, and sedan owners the Crown Victoria common problems guide.
This pump is listed for the 2004 4R75W. Because 2004 was a changeover year, some 2004 vehicles still carry the older design, so compare the pump you remove before installing: look at the intermediate piston (bonded rubber on the late pump, aluminum on the early one) and the forward sealing rings on the stator support. ATRA notes the early and late pumps can be swapped only as complete assemblies. If you install a late pump in an early case, the 2004-2005 wave return spring needs its seat in the case or it will cut into the aluminum. If your unit is a later truck, the 2004-2008 4R75W pump covers the full late run, and older units should look at the 1995-2003 4R70W pump. Unsure which you have? Send your year and VIN, or browse the 4R70W and 4R75W collection.
If the pan shows clutch material, the 2004 4R70W master rebuild kit puts new frictions and seals in with the pump, and a deeper aluminum pan and filter kit adds fluid capacity for towing.
| Fits | 4R75W 2004 |
| Part type | Pump |
| Condition | Used |
| 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.
For 2004 Ford renamed the unit 4R75E and introduced a turbine shaft speed sensor, a new output speed sensor ring gear and a revised pump intermediate piston. Many people still call it a 4R75W. This pump is the 2004 version.
Not as a simple drop-in. The 2004 pump uses a larger bonded rubber intermediate piston and a different return spring. ATRA says it can go into an earlier case only as a complete assembly, and the 2004-2005 wave spring needs its case seat. Send us your year and VIN if you are unsure.
ATRA groups the 2004-up 4R70E and 4R75E pump bodies together. Transmission Digest lists a hardened planetary carrier as the difference between the two transmissions, not the pump. Match the pump design and year to the one you remove.
A new front seal, pump gasket and O-ring at minimum. Inspect the converter hub, flush the cooler, and if the old fluid was burnt or full of material, plan on a rebuild kit and a converter check.
MERCON V automatic transmission fluid. Prime the pump on install, then set the level hot with the engine running using the dipstick.
