A worn or glazed friction module in a TH400 or 3L80 unit is one of the most direct causes of clutch pack slippage and inconsistent shift feel, and replacing it with the correct part for this application is the first step toward restoring proper operation. This listing covers a single friction module matched to the TH400 and 3L80 automatic transmission, with an application range beginning in 1965 and running through current production.
The TH400 and 3L80 are the same unit known under two different designations, and this friction module is sourced to fit that specific build. If you are rebuilding one of these units and your inspection has identified the friction module as the point of failure, this is the individual replacement piece.
This is not a kit. The listing contains one friction module and nothing else. There are no steel plates, no seals, no gaskets, no Automatic Transmission Filter, and no band included. If your rebuild requires those components, they must be sourced separately. Verify your complete parts list before placing the order so there are no surprises when the package arrives.
Total shipping weight is 5 lb. At REMCO, parts like this are picked and checked against the order before they go out, a practice the company has followed since 1991 working exclusively in automatic transmissions. Before ordering, double-check the unit designation stamped or cast on the transmission housing to confirm you have a TH400 or 3L80, and verify that the application year falls within the 1965-and-up range covered by this part.