4R100 Shift Kit 1998-2004, remanufactured and ready to install. Fits the 4R100. Ships fast from the USA.
Searching for a 4R100 shift kit because your truck lost overdrive or now leaves in 2nd? This listing is the electrical fix for that complaint, not a valve body spring kit. The photo, labeled 4R100 Shift Solenoid Kit 2WD, shows a remanufactured solenoid body together with a two-wheel-drive pan filter and a pan gasket, so one pan drop puts in the part that controls every shift plus the service parts you need to close it back up. It is listed for 1998-2004 4R100 trucks: Super Duty pickups, E-Series vans and the Excursion, behind the 7.3L Power Stroke, 5.4L and 6.8L V10.
The 4R100 has no throttle valve cable and no governor. Everything the driver feels as a shift is commanded electrically through the solenoid body bolted under the valve body. Two shift solenoids open and close in combinations to pick the gear, a coast clutch solenoid gives engine braking in the manual ranges, a converter clutch solenoid handles lockup, and the EPC solenoid sets line pressure. ATSG notes the individual solenoids are not serviced separately on this unit, which is why the whole body is replaced. Original packs used a flexible ribbon circuit inside, and Sonnax points to fatigue in that circuit as the reason a pack can throw codes only when hot or on rough roads.
Start at the case connector. Transmission Digest reports corrosion, poor pin fit and broken lock tabs on this family causing the same codes to return after a new pack goes in, so clean and inspect it first. Then measure each solenoid through the connector with the key off and compare against the service specification. Remember that shift error codes P0781 to P0783 can also come from slipping clutches, and a worn line pressure modulator sleeve in the valve body can mimic an EPC fault. Our shift solenoid guide has the full test, and the EPC solenoid guide covers pressure-related complaints.
Listed for 4R100 trucks from 1998 through 2004, and the included filter is the 2WD shallow-pan version. Four-wheel-drive trucks use a deeper pan with a longer-neck filter, so a 4x4 owner will need a different filter even if the solenoid body itself matches. Ford also built the 4R100 with two types of converter clutch control, and Sonnax catalogs separate solenoid blocks for PWM and non-PWM units, so the pack has to match how your truck controls lockup. Match the connector and the shape of your old block against the photo, or send us your year, engine, drivetrain and VIN. Every other part for this unit is on the E4OD and 4R100 collection page.
If the fluid shows clutch material, the pack was probably not the only problem. A 4R100 valve body addresses worn bores, and the 4R100 overhaul kit covers the seals and gaskets for a full rebuild.
| Fits | 4R100 1998-2004 |
| Part type | Shift Kit |
| 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.
No. It is a remanufactured shift solenoid body with a 2WD filter and pan gasket. It fixes electrical shift problems such as no overdrive or 2nd-gear starts, not shift firmness.
The included filter is for the 2WD shallow pan. 4x4 trucks use a deep pan with a longer-neck filter, so you would need a different filter. Send us your year and VIN to confirm the solenoid body itself.
Yes. The 4R100 was built with two styles of converter clutch control and the solenoid blocks differ. Match your old block or send your VIN before ordering.
Not on this unit. The solenoids are not serviced individually, so the complete body is replaced.
Yes. Corrosion, loose pins and broken lock tabs at the case connector are a known cause of repeat codes after a new pack is installed.
MERCON V automatic transmission fluid. Check the level hot in Park after the road test.
