4R55E valve body for 1995-Up, remanufactured and ready to install. Ships fast from the USA.
The 4R55E is the heavier-duty version of Ford's 4R44E, sharing the same case and control logic but carrying larger clutch packs for V6 and 4.0L Ranger, Explorer, and Mazda B-series trucks built from 1995 up. When one of these trucks starts banging into gear, slipping, or hanging in a single gear, the valve body is usually the part actually responsible, even when the solenoids test fine on their own.
Pump pressure flows through the valve body's machined bores and spool valves before it ever reaches a clutch or band, and those valves decide how firmly and how fast each shift happens. The 4R55E valve body also carries the shift solenoids and the pressure control and torque converter clutch solenoids the PCM uses to manage line pressure and converter lockup. Worn bores let pressure bleed past the spools, so shift feel degrades even on a transmission with healthy clutches and a good pump.
Drop the pan and look at the fluid, the magnet, and the separator plate before assuming the valve body is at fault. Test the 4R55E solenoid kit solenoids against spec on an ohm meter, since a failed solenoid is cheaper to rule out than a full valve body. If the solenoids read fine and the truck still shows the symptoms above, cross leaks or worn valve bores in this unit are the more likely explanation.
This valve body fits the 4R55E as installed in 1995-and-up Ford Ranger, Explorer, and Mazda B-series trucks running the V6 or 4.0L engine. The lighter-duty 4R44E uses a similar-looking but different valve body, so match your casting number and solenoid connector to this part, or send your year, engine, and VIN before ordering. If your truck actually carries the 4-cylinder 4R44E, use the 4R44E valve body page instead.
Remove the pan, drain the fluid, pull the valve body out of the case, and carry your solenoids over to the new unit if they tested good, replacing any that did not. Set it in with a fresh filter and pan gasket overhaul kit so the old filter's debris does not immediately load up the new valve body, and torque the bolts evenly in the pattern the service manual calls for. If other components in the transmission are also worn, a complete 4R55E master rebuild kit handles the rest of the job at the same time. Refill with the correct ATF, clear the adaptive strategy, and put the truck through a full shift cycle so the PCM relearns around the new valve body.
| Transmission | 4R55E |
| Year Range | 1995-Up |
| Condition | Remanufactured / updated |
| Shipping | Ships from the USA |
No. The 4R44E and 4R55E share a case but the 4R55E uses larger clutch packs and a different valve body to match. Match the casting number on your old unit, and use the 4R44E valve body page if your truck has the lighter-duty transmission.
Test the shift and TCC solenoids with an ohm meter against factory spec first since that is the cheaper part to rule out. If the solenoids test good but the truck still slips, flares, or shows weak Reverse, the valve body bores are the more likely cause.
Use the Ford-specified Mercon-family ATF for your model year. Confirm the exact spec on the fill cap or in the owner's manual before refilling.
Install a new filter and pan gasket so the new valve body is not immediately fed debris from the old filter, and carry over or replace the solenoids while the pan is off.
Yes. Clear the adaptive shift memory and drive through all gears so the PCM relearns shift timing and converter lockup around the new valve body.
