6L80 Rebuild Kit 6L80E HD HP Automatic Transmission Master Overhaul Banner Box Set

OPT Product Code: OPT-6L80-RB
(5) Reviews: 1
6L80 Rebuild Kit 6L80E HD HP Automatic Transmission Master Overhaul Banner Box Set

Product Details

6L80 automatic transmission rebuild kit

Fits: GM, Cadillac, Chevrolet, GMC, Hummer, and Pontiac

6L80, 6L80E, 6L80-E, MYC 6 speed automatic


This master overhaul transmission kit comes with the following rebuild parts:

  • Full Transtec overhaul gasket set
  • Complete set of friction clutch plates
  • Front pump Teflon bushing
  • Internal high flow fluid filter

The Transtec gasket set included in this overhaul banner box kit is the highest quality available. The set includes every rubber seal, paper gasket, O-ring, sealing rings, and metal clad seals that you will need to complete your rebuild. The Transtec gasket sets are considered a premium kit, the reusable molded rubber pan gasket, and higher quality gaskets and seals throughout.

Additionally, you can add the following upgrades to this rebuild banner box kit:

  • Upgrade to all Raybestos Red HP clutches with black Kolene steel plates
  • Steel clutch plates – only needed with base level clutches. HP upgrade comes with HP Kolene steels
  • Molded rubber piston kit
  • SK 6L80 Transgo Shift Kit
  • Sonnax Zip shift correction kit - 6L45-6L90-ZIP
  • Tow & Pro Transgo Reprogramming Shift Kit
  • ATSG Techtran rebuild manual
  • Bushing set
  • Torrington bearing kit
  • Sonnax 4-5-6 clutch apply piston – 104960-01K
  • Sonnax TEHCM pressure switch rebuild kit - 124740-TL30, 124740-28K, or 124740-30K
  • Low clutch sprag one-way clutch
  • Sonnax o-ringed valve body end plug kit - 104740-23K
  • Transgo pressure regulator valve fix - 6L8-VL-PR3
  • Sonnax line pressure booster Kit - 6L80-LB1
  • HD Torque Converter - USA Made
  • Assembly Grease - Lubegard, Life Smart Blend, or Transjel
  • Platinum Lubegard - Insider tip: Many shops use this synthetic supplement in every freshly rebuilt transmission to keep them on the road past the warranty.

The high performance steels and clutches included with the HP upgrade are highly recommended for modified vehicles or drag racing applications. However, this kit also works well for HD towing and 4x4 applications. The HP Red clutch lining handles 300% more heat than the standard clutches, making them perfect for vehicles that generate excessive heat for extended periods. These Red clutches and Kolene steels can be found in Stage 1, 2, & 3 transmissions with up to 1000 hp.

Remember to soak all of your clutches in transmission fluid for thirty minutes before you install them.

These transmissions can be found in the following vehicles; however you should double check your application.  It is common for similar vehicles to have multiple transmission options available from the factory.


  • CTS 6.0L 2007-2009
  • Escalade, EXT, ESV 2007-2015
  • STS-V V8 Supercharged 2006-2011
  • XLR 2006-2009


  • Avalanche 1500 2009-2012
  • Camaro V8 naturally aspirated 2009-2015
  • Caprice 2009-2013
  • Colorado 5.3L 2008-2012
  • Corvette 2007-2014
  • Express Van 1500 2009-2017
  • Silverado Truck 1500, 2500 2008-2021
  • Suburban 1500 2009-2020
  • Tahoe 2009-2020


  • Canyon 5.3L 2008-2012
  • Savana Van 2500 2009-2017
  • Sierra Truck 1500, 2500 2008-2021
  • Yukon 2009-2020
  • Yukon XL 1500 2009-2020
  • Yukon Denali 2007-2015


  • H2 2008-2010
  • H3 5.3L 2008-2011


  • G8 V8 2008-2010

These transmissions are part of the Turbo Hydramatic or Hydra-Matic series and also known by the following codes and part numbers: 6L80, 6L80E, 6L80-E, MYC

This transmission master rebuild kit fits the following years: 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, and 2017, 2018, 2019, 2020, 2021

6L80 Rebuild Kit 6L80E HD HP Automatic Transmission Master Overhaul Banner Box Set

OPT Product Code: OPT-6L80-RB

(5) Reviews: 1
Please review all options below before selecting "Add to Cart".
Quality kit at an even better price!
With this kit you cant go wrong! Having the option to add additional upgrades to this kit is also super helpful. Wish I would have found OPT sooner. To top it all off super fast delivery. Highly recommend. I will be spreading the word.
Jordan Gamble
Verified Buyer
15 of 18 customers found this helpful.
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