4R55E Pump 1995-1996, remanufactured and ready to install. Fits the 4R55E. Ships fast from the USA.
The 4R55E only lived for a couple of model years, so owners of a 1995-1996 Ford Explorer or a 4.0L Ranger often have a hard time finding the right internal parts. If yours hesitates before it moves into gear, loses pressure and starts slipping on a long climb or with a trailer, or whines with the engine on a cold or hot morning, a worn front pump is a common cause. This remanufactured 4R55E pump is listed for the 1995-1996 transmission.
Ford built the 4R55E as the heavy-duty sibling of the 4R44E, with stronger drive components for the 4.0L Cologne V6, and Wikipedia gives it a 550 lb-ft rating against 440 for the 4R44E. It is still an A4LD descendant at heart: the converter hub turns the pump, the pump supplies the whole hydraulic system, and the EPC solenoid trims that supply into line pressure for the clutches, bands and converter. A heavier vehicle like the Explorer asks more of that pressure on every launch, which is why a pump that has lost volume shows up first under load and with hot fluid.
Many 4R55E complaints come from the valve body rather than the pump. Sonnax traces delayed reverse, 1-2 and 2-3 flares, harsh shifts after a kickdown and even broken bands and blown servo seals to EPC circuit leakage and a sticking EPC and engagement control valve. Test line pressure hot in Drive and Reverse: pressure that is low everywhere and does not rise when the EPC is commanded up points to the pump or the EPC solenoid, so test the 4R55E pressure control solenoid first. Low pressure in one range only points to a circuit leak. Our slipping diagnosis guide covers the checks in order, and the ATF color and smell chart helps you judge how far the damage has gone.
This pump is listed for the 1995-1996 4R55E, used behind the 4.0L V6 in the Ford Explorer and the 4.0L Ranger. For 1997, Ford replaced the 4R55E with the five-speed 5R55E in these trucks, so a 1997-up Explorer needs a different part. Two-wheel-drive and four-wheel-drive versions use different tailshaft housings, not different pumps, but early-production running changes are common on a short-lived unit. Compare your old pump with this one, read the transmission code on the door tag, or send your year and VIN and we will confirm before it ships.
| Fits | 4R55E 1995-1996 |
| Part type | Pump |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
The 4R55E was used with the 4.0L V6 in the 1995-1996 Ford Explorer and the 4.0L Ranger. For 1997 it was replaced by the five-speed 5R55E.
Both transmissions come from the A4LD family and share the bell housing bushing design, but they were built for different duty ratings. Order by the transmission code your truck has, or send your VIN so we can confirm.
It can be. A worn pump loses volume as fluid thins with heat. Test line pressure hot; if it is low in every range and the EPC solenoid tests good, the pump is the likely cause.
A new front seal and pump gaskets at minimum. Inspect the converter hub and bushing, flush the cooler, and plan a rebuild kit if the fluid was burnt.
Prefill the converter, check the fluid level hot after the first drive, and recheck for leaks at the front seal and pump.
