Restoring proper hydraulic pressure in an E4OD or 4R100 automatic transmission starts with sealing rings that actually seat and hold, and this 7-piece set gives you the metal and Teflon rings the unit needs without bundling parts you may already have on the bench. What separates this set from a generic assortment is the specific split: 4 metal rings for the locations that demand a rigid seal and 3 Teflon rings for the positions where material compliance is part of the design. Running a cracked or deformed ring in any of those spots bleeds off the pressure the valve body is trying to build, and the result shows up as soft or delayed shifts long before the transmission fails outright. Addressing all seven positions at the same time, rather than replacing only the one that looks bad, keeps pressure balanced across the circuit and avoids a repeat teardown.
Each order is put together at the REMCO facility, ring by ring, checked against the printed parts list that goes into the box with the order. REMCO has been working in automatic transmission parts since 1991, and that process has not changed. The set does not include friction discs, steel plates, an Automatic Transmission Filter, or any gaskets, so review your repair list before purchasing to confirm you have those covered elsewhere. This item weighs 1 lb as shipped. Verify that your unit carries the E4OD or 4R100 designation and that the production date falls within the 1989-and-up range before placing the order; the transmission identification tag on the unit is the reliable source for that confirmation.