6T50 Clutch Module 2015, new and ready to install. Fits the 6T50. Ships fast from the USA.
The 6T50 is the strongest member of GM's front-drive six-speed family, rated by GearboxList at up to 350 Nm and used behind larger engines in the Malibu, Regal, Verano, Captiva and Envision. When a later 6T50 slips under load, flares on an upshift or comes back from a long drive with burnt fluid and slip codes, the friction plates are usually worn. This listing is a Gen 3 friction module, Exedy part number EFK425, for 6T50 units built from 2015 on. It contains the lined frictions only.
Like the rest of the family, the 6T50 has no bands. It makes six forward gears and reverse from five clutch packs, 1-2-3-4, 2-6, 3-5-Reverse, 4-5-6 and Low/Reverse, plus a low one-way clutch, and two packs are applied for every gear. These frictions are the lined plates in those packs. What makes Gen 3 different is the pump: from 2015 GM moved to a chain-driven, off-axis variable vane pump with a lube-on-demand valve, in place of the earlier converter-driven gerotor pump. That matters for this part, because Transmission Digest ties low-mileage Gen 3 slipping with burnt clutches to pressure regulator and pump wear. Frictions that burned because of low line pressure will burn again if the pump is not fixed.
Set the fluid level hot at the check plug and look at its condition, then record which gears slip. On a Gen 3 6T50, check line pressure before you condemn the clutches; Sonnax recommends a vacuum test of the lube-on-demand valve bore during any rebuild, since a worn bore can bleed converter feed and starve the cooler. Our 6T40-family slipping guide covers the order of checks, and the 6T40 identification guide shows how to tell a Gen 3 from a Gen 2 on the bench.
This module is listed for Gen 3 6T40, 6T45 and 6T50 units from 2015 on, and this page covers the 6T50. GM changed generations by production date, not by model year, so a 2015 or 2016 vehicle can still carry a Gen 2 unit. The quickest check is the pump: if the unit has an off-axis, chain-driven pump, it is a Gen 3 and this module applies. If yours is an earlier unit, the Gen 2 and Gen 1 plate sets are not the same; see our 2012-2013 6T50 overhaul kit for the Gen 2 seals and gaskets. When in doubt, send us the year and VIN and we will confirm it. The same module is also listed as the 6T40 Gen 3 friction module.
| Fits | 6T50 2015 |
| Part type | Clutch Module |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Only if the unit is a Gen 3. GM changed generations by build date, so check for the off-axis, chain-driven pump or send us the year and VIN to confirm.
No. It is the friction plates only. Reuse steels only if they are flat and unmarked, and get pistons, seals and gaskets from an overhaul kit.
Transmission Digest links that pattern to pressure regulator valve and pump wear on Gen 3 units. Check line pressure and the pump before installing new frictions.
Yes, the same Exedy module is listed for the Gen 3 6T40, 6T45 and 6T50. Match each new plate to the one you remove before assembly.
DEXRON VI. GearboxList lists 8.2 L for a dry fill. Set the final level hot at the check plug with the engine running.
