4L65E Clutch Module 2001, new and ready to install. Fits the 4L65E. Ships fast from the USA.
A 4L65E that flares between gears, loses overdrive while towing, or comes out of the pan with black, burnt fluid has worn through its friction plates. This listing is the Exedy EFK227 friction clutch module (part number N74119G) built for 2001-up 4L65E transmissions, the heavy-duty four-speed behind the 5.3L and 6.0L V8 in Silverado, Sierra, Tahoe, Yukon, Suburban and Avalanche. It is a frictions-only set: 23 new lined plates covering every clutch pack in the unit, so you rebuild the whole gear train on one material instead of mixing new and tired plates.
Every gear in a 4L65E is made by hydraulically clamping friction plates to steel plates inside a drum or case. The EFK227 count breaks down by pack:
The 3-4 pack is the one to watch. It stays applied through 3rd and overdrive, so on a loaded truck it carries engine torque for most of the highway miles, and it is the pack GM, Sonnax and every rebuilder single out when a 4L65E slips. A seven-plate 3-4 stack with .065 in. frictions gives the builder the plate count this unit was designed around rather than a thinner light-duty pack.
Worn frictions are usually the result, not the root cause. Sonnax ties most 4L60E-family 3-4 burnups to low line pressure and leaks in the 3rd-gear circuit, and GM documented the turbine shaft moving in the input housing and uncovering the 3-4 feed hole. Check fluid level hot, pull codes and run a line pressure test first; our 4L65E 3-4 clutch failure guide covers those checks in order. If the complaint is a harsh or late shift with no slip, work through the 4L65E common problems guide before buying clutches.
This module is configured for 2001-up 4L65E transmissions, which were installed in GM full-size trucks and SUVs from 2001 through 2007. Individual plates in it also appear in 700-R4, 4L60 and 4L60E units, but the complete set is laid out for the 4L65E pack counts, so a 4L60E builder should count their old plates before ordering. Production changes over the years mean drums and plate counts can differ between units; match the friction count and tooth style in each pack, or send us your year and VIN and we will check it. Browse every hard part we carry in the 4L65E parts collection.
| Fits | 4L65E 2001 |
| Part type | Clutch Module |
| Condition | New |
| Brand | Exedy |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
23 frictions: 5 forward, 2 overrun, 7 3-4 at .065 in. thick, 4 reverse input and 5 low/reverse. That covers every clutch pack in the 4L65E.
No. It is frictions only. Pair it with a steel plate module if your steels are warped or heat-blued, and with a rebuild kit for seals, sealing rings and gaskets.
Some plates interchange with the 4L60E, 4L60 and 700-R4, but the set is laid out for 2001-up 4L65E pack counts. Count the frictions in each of your packs and compare before ordering, or send us your year and VIN.
Only if the cause was plain wear. Low line pressure, leaking input housing sealing rings and a turbine shaft that has moved in the input housing all burn the 3-4 clutch again, so inspect and fix those during the rebuild.
Dexron VI, the GM service-fill fluid for the 4L65E. Soak at least 30 minutes, then check the level hot after the rebuild.
