When a rebuild calls for only the rear reverse band and nothing else, this listing delivers exactly that: one rear reverse band, part number 8681820, sized and specified for TH400, 3L80 and 4L80E automatic transmission units built from 1968 up to current production. What sets this piece apart is the application range it covers, spanning three related transmission designations across more than five decades of production, which makes it a dependable go-to part for shops and rebuilders who work with this family of units regularly.This is a single-component listing. It does not come packaged with friction discs, steel plates, a filter, an overhaul gasket set, seals, or any other rebuild supplies. If your job requires those additional pieces, they need to be sourced separately. REMCO has been working in automatic transmissions since 1991 and handles each order by pulling and verifying the part against its catalog record before it ships, so what arrives matches what was ordered.The rear reverse band, also cataloged as 8681820, plays a direct role in controlling reverse and certain holding functions inside these units. A worn or glazed band contributes to slipping, delayed engagement, or outright failure in reverse, so replacing it as part of a proper rebuild is straightforward practice. At 1.8 lb shipping weight, this is a compact but important piece.Before placing the order, cross-check the transmission identification code on your unit against TH400, 3L80 or 4L80E, and confirm the vehicle year falls within 1968 to present. No vehicle makes or models are listed here because fitment depends on the transmission code, not the vehicle nameplate. Skip the guesswork on sourcing: this rear reverse band is stocked as a single unit so you buy exactly what you need, nothing more. This listing is for one band only. It does not include friction discs, steel plates, filter, gaskets, seals, or any other components. Verify your full parts list before ordering. The rear reverse band is a direct-application piece for TH400, 3L80 and 4L80E transmissions, covering units from 1968 forward. Part number 8681820 confirms the exact fitment. Contents: one (1) rear reverse band, part 8681820. Shipping weight is 1.8 lb. REMCO verifies each piece against its part record before it leaves the bench. Before ordering, confirm the transmission code stamped on your unit matches TH400, 3L80 or 4L80E, and check the model year falls within the 1968-to-present production range.