4L80E Remanufactured Transmission

4L80E Retail Installers & Wholesale Resellers

Need a 4L80E transmission for sale or installed? Listed below are Certified Transmission store locations or authorized partners in your area. To view all locations and partners, please visit our national directory.

4L80E

4L80E Transmission The 4L80E transmission evolved from the heavy-duty TH400 transmission. The 4L80E offers a 4th gear overdrive feature whereas the TH400 only offered a total of 3 forward speeds. It was the need for an overdrive transmission that was the ultimate reasoning behind retiring the TH400 transmission. Having identical ratios, the exception of the 4L80 was that it has a 0.75:1 overdrive used for 3/4 and 1-ton pickup trucks that have either a 6.2L or 6.5L diesel engine.

The 4L85E offers an input torque capacity that is slightly higher and used with GMC / Chevrolet vans (up to the 2005 model year) with the Duramax diesel engine. Thereafter, the 6 speed 6L90 replaced the 4L85E. The 4L60 was used in lieu of the 4L80 during the same time period for half-ton 6.2L/6.5L diesel. Used by GM gasoline engines until 2009, the 4L80E transmission is electronically controlled. When the Duramax diesel was first introduced for the 2001 model year, the 4L80E was replaced by the Allison 1000 as it was not capable of holding up to the engine's rated torque.

91-05, 6.2L/6.5L (4L80E) & 6.6L Duramax Diesel (4L85E, Vans Only)