E4OD Overhaul Kit 1998, new and ready to install. Fits the E4OD. Ships fast from the USA.
Shops and parts catalogs still file most 1998 Ford heavy-duty automatics under E4OD, so that is what owners of a 1998 F-250, F-350 or E-Series van search for when the transmission starts leaking, slipping on hills or clunking into gear after a pause. This listing is a new overhaul kit for 1998 applications, pictured sealed in Toledo Trans-Kit packaging. It is the gasket and seal set you build a rebuild around.
Ford renamed the unit 4R100 for 1998, with a revised pump, coast clutch drum and converter clutch control on the same basic E4OD layout. That makes 1998 the year where the name on the invoice and the parts inside the case may disagree. Sonnax lists one solenoid block, 36424B, that covers 1995-1998 E4OD and 1998-later 4R100 units, which shows how much carries over. The seal set is the part of the job least affected by the change; pumps and drums are where it matters. Our 4R100 vs E4OD guide shows how to tell them apart on the bench.
Each clutch and band in this transmission is applied by oil that leaves the pump, passes through sealing rings on the stator support and drums, and pushes a piston sealed by a molded lip. The kit replaces those seals plus the pan, valve body and case gaskets. Hardened seals let pressure escape, so clutches engage late and slip under load even when the frictions still have life.
ATRA's quick reference notes these units default to fourth in Drive and second in 2 and 1 when solenoid control is lost, and Transmission Digest documented a false 4x4 low signal causing early shifts and late low-range shifts. Neither is fixed with a seal kit. Scan for codes, test the solenoid pack with our shift solenoid guide, and check line pressure. Low pressure with clean electrical readings means it is time to open the case.
This kit is listed for 1998 units. Because 1998 straddles the name change, confirm by the ID tag on the case, the pump casting, or by sending us your year and VIN. If the truck is earlier or later, the E4OD and 4R100 collection lists kits by year range.
| Fits | E4OD 1998 |
| Part type | Overhaul Kit |
| Condition | New |
| 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.
The 1998 seal set covers the changeover units sold as either name. Send your year and VIN if you want us to confirm it against your truck.
Usually not. Being locked in fourth in Drive or second in manual ranges is the electrical failsafe. Check the solenoid pack, connector and fuses before rebuilding.
A filter, and any hard parts that fail inspection: frictions and steels if burnt, the pump if scored, and the solenoid pack if out of spec.
MERCON V, the current replacement for the original MERCON. Check the level hot, in Park, on level ground.
There is no formal relearn on these units, but clear codes, check pressure and road test through every gear before returning the truck to towing.
