4T60E Shift Kit 1991-99, new and ready to install. Fits the 4T60E. Ships fast from the USA.
Read this before you order: although this product is titled as a 4T60E shift kit, the part you receive is the K52900-1E overhaul kit, the gasket, O-ring and seal set used when a 4T60E is torn down and rebuilt. It is listed for GM's 1991-1999 4T60E, with some late applications into 2002, in Buick, Chevrolet, Oldsmobile and Pontiac front-drive cars. If you came here because of converter shudder, no lockup or a burnt 2nd clutch and want the valve body repair kit, that is our TransGo SK 4T60E-JR shift kit. If you have a transaxle on the bench and need it sealed up, this is the kit.
A 4T60E moves oil from the pump through the channel plate, the case and the rotating drums to every clutch and band, and each handoff is sealed by a gasket, an O-ring or a lip seal. Old rubber shrinks and hardens with heat, so a rebuilt unit put back together with original seals loses apply pressure at those joints, and the clutch fed by a leaking seal slips and burns. An overhaul kit replaces that sealing material all at once. It is not friction material and it does not change how the valve body behaves: it simply makes sure the pressure the pump builds actually reaches the parts it is meant to apply. Treat it as the base layer of a rebuild, with clutches, bands, a filter and any hard parts bought to match what the teardown shows.
Pressure testing and a look in the pan tell you how deep the job goes. A clean pan with soft hot shifts can be a sealing problem; a pan full of friction material means clutches are worn and you need frictions as well as seals. Sonnax documents forward band and servo case wear shared by the 4T60-E and 4T65-E, so inspect the servo bore during teardown. Our 4T65E common problems guide covers failure patterns that carried over from this design, and the pump failure guide helps decide whether the pump needs more than new seals.
The kit is listed for GM 4T60E transaxles from 1991 to 1999, with some later applications noted into 2002. It is not for the 440-T4 that preceded it or the 4T65E that replaced it, and some late-1990s cars changed to the 4T65E, so check the ID tag on the case first. Gasket shapes can differ between production updates; compare the new gaskets to your old ones before installing, or send us your year and VIN to confirm. Every 4T60E and 4T65E part we carry is on the 4T65E and 4T60E collection page.
| Fits | 4T60E 1991-99 |
| Part type | Shift Kit |
| Condition | New |
| Brand | GM |
| Reference | K52900 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is the K52900-1E overhaul kit: gaskets, O-rings and seals for a standard 4T60E rebuild. It does not contain valve body springs or valves. For the valve body repair kit, see the TransGo SK 4T60E-JR.
The kit is described as gaskets, O-rings and seals. Plan on buying the filter and any frictions, steels or bands separately based on what the teardown shows.
It is listed for 1991-1999 GM 4T60E transaxles, with some applications into 2002, in Buick, Chevrolet, Oldsmobile and Pontiac cars. Check the case ID tag to confirm a 4T60E, or send us your year and VIN.
External leaks from the pan, side cover or axle seals can often be fixed without removing the unit, and this kit contains those seals. Internal seals require disassembly.
DEXRON-VI. GM specifies it as backward compatible with the DEXRON III and II fluids these transaxles originally used. Check the level hot.
