4T60E Clutch Drum, new and ready to install. Fits the 4T60E. Ships fast from the USA.
Searching for a 4T60E clutch drum because your Grand Prix, Lumina, Regal, Cutlass or LeSabre slips on take-off or engages late? Before you buy, know exactly what this listing is. The part shipped here is a new GM input clutch drum piston, ACDelco OE part number 24203479, not a bare drum or a complete clutch housing. For many rebuilds that is the better buy: the housing itself is often fine and the piston is the piece that warped, cracked or wore its seal surfaces. The same part is listed for 4T60E and 4T65E transaxles from 1991 on, plus Volvo models that used the GM unit, and crosses to aftermarket bonded piston 84964B.
The input housing on a 4T60E and 4T65E is a steel drum with the input shaft in its center. Inside it live two clutches, the input clutch and the 3rd clutch, each applied by its own piston. Apply oil reaches the input piston through Teflon rings on the drum hub. That gives three separate places where the clutch can lose pressure: the rings on the hub, the drum itself (cracks, worn ring lands, a loose shaft), and the piston and its lip seals. Replace the drum when the ring lands are grooved, the shaft is loose or the clutch lugs are hammered. Replace the piston when the drum checks out but the piston is bent, cracked or will not hold air. This listing covers the second case.
A low fluid level, a sticking pressure control solenoid, or worn rings against the driven sprocket support can all imitate a leaking piston, and all of them are cheaper. Start with a hot fluid check and a scan, then work through our 4T65E pressure control solenoid symptoms guide to rule out low line pressure. On the bench, pressurize the input clutch through its feed hole with regulated air. A firm thump and quiet hold means the circuit is sealed. A hiss from behind the piston, a piston that rocks on a flat surface, or cracking near the seal groove confirms that this part is what you need. Our 4T65E 3-4 clutch failure guide explains the other clutch failures you may find once the unit is open.
This piston carries GM number 24203479 and is listed for 1991 and later 4T60E and 4T65E units used in Buick, Chevrolet, Oldsmobile and Pontiac front-wheel-drive cars. GM revised these transaxles more than once, so lay the new piston next to your original and compare diameters and the apply face before installing, or give us your year, model and VIN and we will confirm it. Other hard parts and kits for this family are on the 4T65E parts collection.
Rebuilding the whole unit? The 4T60E banner rebuild kit covers early 4T60E units, and the 4T65E master rebuild kit for 2003-up covers later 4T65E units. If your housing turns out to be the problem, see the 4T65E input clutch drum for 1997-up.
| Fits | 4T60E |
| Part type | Clutch Drum |
| Condition | New |
| Brand | GM |
| Reference | 24203479 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
One new input clutch drum piston, GM 24203479, in ACDelco packaging. No drum, clutches, seals or springs are included.
It is listed for 1991 and later GM 4T60E and 4T65E front-wheel-drive transaxles in Buick, Chevrolet, Oldsmobile and Pontiac cars, and Volvo models with the same unit. Confirm by comparing with your old piston or sending us your VIN.
Yes. If apply oil leaks past the piston or its seals, the input clutch fills slowly and slips. Worn hub rings and the driven sprocket support cause the same symptom, so air-check the circuit to find the leak.
Only if the drum fails inspection: grooved ring lands, a loose input shaft, cracks or damaged clutch lugs. Otherwise a new piston, seals and plates in the original housing is a normal repair.
DEXRON-VI. Check the level with the fluid at operating temperature, then clear adapts and let the computer relearn shifts.
