E4OD Sprag Clutch 1998, new and ready to install. Fits the E4OD. Ships fast from the USA.
A late E4OD or a 4R100 in a Ford Super Duty, Excursion or E-Series van that flares between gears when it is hot, slips in overdrive with a trailer behind it, or has black, burnt fluid on the dipstick usually has the same problem inside: friction plates that are glazed or worn through. This listing is a Raybestos Clutch-Pack friction module, part number RCP96-091, for 1998-on late E4OD and 4R100 units. It is not a sprag or one-way clutch, despite the name on this listing. It is the complete set of lined friction plates for relining every multi-disc pack in the transmission during a rebuild.
Each multi-disc clutch in the E4OD family is a stack of lined frictions splined to one member and steel plates splined to another. Hydraulic pressure strokes a piston, clamps the stack, and locks the two members together to make a gear. Raybestos builds RCP96-091 around those packs and matches the lining to the job each one does: 6 tan low/reverse frictions, 5 tan direct clutch frictions of the second design, 3 tan overdrive frictions, 3 graphitic coast clutch frictions, 3 high-energy intermediate frictions, and 4 tan forward clutch frictions with a hardened core. The hardened forward core is there to stop the tooth wear and tooth sharpening that develops on the forward plates over time. That is 24 frictions in all. Steel plates are not part of the listed contents.
Rule out the electrical side before you pull the transmission. A worn solenoid body, a broken connector lock tab or a weak EPC circuit can feel exactly like a slipping clutch. Read codes, then work through our E4OD EPC solenoid symptoms guide and the E4OD common problems guide. Put a gauge on line pressure. If pressure is in spec and the slip still follows one range, that pack is burnt and the unit needs a rebuild with new frictions.
Raybestos lists RCP96-091 for 1998-on late E4OD and 4R100 transmissions built without a mechanical diode. That covers Ford heavy-duty pickups, the Excursion and E-Series vans behind the 7.3L Power Stroke, 5.4L and 6.8L V10, which is the range on this listing. If your unit has a mechanical diode, this pack is not the right one. Earlier E4ODs from 1989-1997 use different parts and should use a kit built for those years. Count the plates and teeth you pull out of each pack and compare them with the kit before assembly, or send us your year, engine and VIN and we will check it. The 4R100 vs E4OD comparison explains the late changes, and every part we carry is on the E4OD and 4R100 parts page.
| Fits | E4OD 1998 |
| Part type | Sprag Clutch |
| Condition | New |
| Brand | Raybestos |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The listing is named sprag clutch, but the part is a Raybestos RCP96-091 friction clutch pack: 24 lined friction plates for the multi-disc clutches. The sprag and roller clutches are separate parts.
No. The listed contents are friction plates only. Reuse steels that are flat and unscored, and replace any that show heat damage.
It is listed for 1998-on late E4OD and 4R100 units. An earlier E4OD should use a friction kit made for its years. Count your plates and teeth against the kit if you are unsure.
Raybestos lists this pack for units that do not use a mechanical diode. If your transmission has one, the plate counts differ and you need a different pack.
Use Mercon V ATF. Soak the new frictions in the same fluid before assembly and flush the cooler before refilling.
