5R44E Shift Kit 1997-2011, new and ready to install. Fits the 5R44E. Ships fast from the USA.
Searching for a 5R44E shift kit usually starts with a Ranger or Mazda B-Series pickup that shifts erratically: it pulls away in second, hangs in one gear with the check engine light on, or slams the 2-3 shift one day and slurs it the next. This listing carries the shift kit name, but the box holds a six-piece solenoid set under reference A56420K: four on/off shift solenoids, the EPC (electronic pressure control) solenoid and the TCC lockup solenoid. If your problem is electrical, as it very often is on these trucks, this is the part that actually controls the shifts. If you want firmer hydraulic shifts from new valves and springs, that is a different product, covered below.
The 5R44E is a five-speed rear-drive automatic that shares its valve body design with the 4R44E, 4R55E and 5R55E. It has no shift linkage to the throttle; the PCM picks every gear. The four shift solenoids turn oil on and off to the shift valves, and the pattern of which ones are on decides the gear. The EPC solenoid sets the signal to the boost valve, so it controls how much line pressure the bands and clutches see and how hard each shift feels. The TCC solenoid applies the converter clutch once the truck is cruising. A sticking shift solenoid shows up as a missing or wrong gear. A weak EPC solenoid changes every shift at once. A tired TCC solenoid shows up only at steady highway speed.
Unplug the case connector and look for fluid that has wicked into the pins or harness. That alone can set solenoid codes on good parts. Check each solenoid's resistance at the connector against the service manual, and tap a pressure gauge into the line port to see whether pressure climbs when EPC is commanded. A slip in the upper gears with P0735 is often servo or band wear rather than a solenoid, so do not assume the electrical side is the cause. Sonnax's vacuum test guide also links some solenoid-style codes and wrong-gear starts to worn valve body bores, which new solenoids cannot fix. Our harsh or delayed shift walkthrough separates electrical faults from hydraulic and mechanical ones, step by step.
A valve body shift kit replaces or modifies valves, springs and separator plate holes so the hydraulics apply faster. It does nothing for a coil that is open, shorted or slow to respond. If your codes and resistance checks point at the solenoids, buy this set. If the solenoids test good and the complaint is slipping or soft, slow shifts with the right gear selected, the TransGo 5R55E/5R44E shift kit is the hydraulic answer. Many rebuilders install both while the pan is off.
The listing names the 5R44E, 5R55E, 4R44E and 4R55E from 1997 to 2011, in the Ford Ranger, early Explorer and Explorer Sport Trac, the 1997 Aerostar, and Mazda B2300, B2500 and B4000 pickups. The Ranger Station's chart puts the 5R44E behind the 2.3L and 3.0L engines in 2001-2009 Rangers and the 5R55E behind the 4.0L. Ford used several of these transmissions across the same truck lines, so confirm the code on the door jamb sticker or the case tag. Before installing, set each old solenoid beside its replacement and compare body shape, O-ring position and connector. The 5R55W and 5R55S in 2002-and-later four-door Explorers use a one-piece solenoid block and do not take this set. Send us your year and VIN if you want a second check. More parts for this family are on the 5R55 collection page.
| Fits | 5R44E 1997-2011 |
| Part type | Shift Kit |
| Condition | New |
| Brand | OEM |
| Reference | A56420K |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Solenoids. Despite the listing name, it is a six-piece set: four shift solenoids, one EPC solenoid and one TCC solenoid. For a hydraulic shift kit with valves and springs, look at the TransGo 5R55E/5R44E kit.
The listing covers the 1997-2011 Ranger with the 5R44E or 5R55E, and the 3.0L Ranger of that era used the 5R44E. Confirm the transmission code on the door jamb sticker and compare your old solenoids before installing.
No. The 2002-and-later four-door Explorer uses the 5R55W or 5R55S, which has a one-piece solenoid block instead of individual solenoids.
All six are the same age and have seen the same heat. With the pan already off, replacing the full set costs less than a second teardown when the next one fails.
Mercon V, with the level set hot and the engine running. Clear codes and reset the adaptive tables, then drive through all five gears so the PCM can relearn.
