4T65E Sprag Clutch, remanufactured and ready to install. Fits the 4T65E. Ships fast from the USA.
Read this first: although this listing sits under the sprag clutch heading in our catalog, the part you receive is a remanufactured 4T65E second clutch drum, GM part number 19331468. It is the late 1997 and later version with square lugs for the steel plates and a deep oil groove between the sealing rings, and it is described as a six-clutch drum. If you are rebuilding a Chevrolet Impala, Monte Carlo, Pontiac Grand Prix, Buick LeSabre, Century or Lucerne whose transaxle slips once it leaves first gear, this is the housing that holds the clutch pack doing that work. If you actually need the input or third one-way clutch, see the sprag options linked under Fitment below.
The second clutch applies on the 1-2 upshift and stays on for third and fourth, so this drum carries torque in three of the four forward gears. The steels key into the square lugs, the piston works in the drum bore, and apply oil travels through the hub where the rings seal. Transmission Digest notes the drum holds six frictions and that GM never published a clearance spec for the pack, which is why loose packs and worn drums keep coming back on this unit.
The practical result: a drum that leaks apply oil at the ring lands lets the pack clamp softly, the frictions glaze and burn, and the computer keeps adding pressure until it runs out of room. The same drum is also the drum the reverse band wraps around, so a ridged outer surface can ruin a new band.
Check fluid level hot and read stored codes first. A pressure control solenoid that sticks gives long, soft shifts that look a lot like clutch slip, and it is a cheap swap, so work through our 4T65E EPC solenoid diagnosis guide before pulling the unit. Our 4T65E common problems guide explains how to read the shift error and TAP cells: slip in second through fourth points at the second clutch, slip only in third points at the third clutch. Once the transaxle is apart, an air check through the second clutch feed that blows past the drum, a worn ring land, or a cracked housing settles it.
GM 19331468 is the late 1997 and up second clutch drum for the 4T65E used in the Impala, Monte Carlo, Grand Prix, LeSabre, Century, Lucerne and related front-drive GM cars through the end of production. Early 1997 units can differ, so compare your old drum before you buy: square lugs, the deep groove between the rings and the six-friction stack should all match. When in doubt, send us the year and VIN and we will check it. Browse the full 4T65E parts collection, or if your fault is really a one-way clutch, start with the 2003-up input and third one-way clutch set.
| Fits | 4T65E |
| Part type | Sprag Clutch |
| Condition | Remanufactured |
| Brand | GM |
| Reference | 19331468 |
| 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 4T65E second clutch drum, GM 19331468. The listing is filed under sprag clutch, but the part is the remanufactured drum with square lugs and a deep oil groove between the rings.
No. It is the bare remanufactured drum. Plan on new frictions, steels, piston seals and sealing rings from a rebuild kit when you assemble it.
This is the late 1997 and up design. Early 1997 units can use a different drum, so compare the lugs and groove on your old drum or send us the year and VIN before ordering.
P0730, incorrect gear ratio, is the usual one, often only under heavy throttle. Long shift times and high adapt values on a scan tool are the other clue.
Dexron VI. GM lists about 7.4 quarts for a pan service on the 2008 Impala; a dry rebuild with an empty converter takes more, so fill and then check hot.
