Transmissions - Automatique

No need to spend time locating the right deep sump filter service kit for your Allison transmission, get it right from the source.

Control your torque convertor lockup and pressure settings with BD's new Allison controller kit your 2011-2015.5 GMC/Chevy Duramax 6.6L with the LML engine.

New genuine Allison transmission pan gasket for your 2001-2019 6.6L LB7/LLY/LBZ/LMM/LML/L5P Duramax

2015-2016 GM 6.6L Duramax LML - GM's factory transmission lines leave something to be desired. DRP's 5/8-inch cooler line kit completely replace the OEM lines with 1500psi rated industrial hydraulic lines.

Install the Allison 29546972 Pressure Switch Assembly to your 2001-2019 GM 6.6L Duramax and get an OEM replacement component.

Control your torque convertor pressure settings with BD's new Allison controller kit your 2011-2016 GMC/Chevy Duramax 6.6L with the LML engine.

The A50 and T14 TCM that is used to control the Allison 6-speed automatic transmission is the weak link of the Allison transmission. This is due to delicate thin wires inside the TCM that contact one another overtime and short-out the entire module. In 2022, Allison sent out a letter (SIL 15-1K2K-22) announcing the discontinuation of support for the A50 and T14 TCMs. This effectively left over 10,000 Duramax owners out of their trucks.

The A50 and T14 TCM that is used to control the Allison 6-speed automatic transmission is the weak link of the Allison transmission. This is due to delicate thin wires inside the TCM that contact one another overtime and short-out the entire module. In 2022, Allison sent out a letter (SIL 15-1K2K-22) announcing the discontinuation of support for the A50 and T14 TCMs. This effectively left over 10,000 Duramax owners out of their trucks.

The A50 and T14 TCM that is used to control the Allison 6-speed automatic transmission is the weak link of the Allison transmission. This is due to delicate thin wires inside the TCM that contact one another overtime and short-out the entire module. In 2022, Allison sent out a letter (SIL 15-1K2K-22) announcing the discontinuation of support for the A50 and T14 TCMs. This effectively left over 10,000 Duramax owners out of their trucks.

This heavy duty oil pan adds 3.5 quarts to the transmission's oil system, extending the life of your Allison by keeping it running cool under harsh conditions. Fits 2001-2018 GMC/Chevy Duramax 6.6L trucks with LB7, LLY, LBZ, LMM, or LML engines.

Mishimoto's new transmission cooler for your 2011-2014 GMC/Duramax LML has 41% greater core volume and 73% greater external fin surface area over the stock OEM cooler. If you tow, then this cooler is a must!

The A50 and T14 TCM that is used to control the Allison 6-speed automatic transmission is the weak link of the Allison transmission. This is due to delicate thin wires inside the TCM that contact one another overtime and short-out the entire module. In 2022, Allison sent out a letter (SIL 15-1K2K-22) announcing the discontinuation of support for the A50 and T14 TCMs. This effectively left over 10,000 Duramax owners out of their trucks.

2001-2016 GM 6.6L Duramax LB7 LLY LBZ LMM LML w/ 5/8" Cooler Lines - BD's Double stacked cores deliver over 40,000 BTU/HR of cooling and over 350% temperature drop versus the factory system.

The ATS 3059004248 Billet Flex Plate for your 2001-2015 GM 6.6L Duramax an excellent alternative to stock and other manufacturers flexplates, solving the breakage issues so commonly found.

Reliably handle up to 1500 lbs-ft of torque with BD's heavy duty Black Oxide Flexplate for your 2001-2016 GMC/Chevy 6.6L Duramax. Forged from billet steel, this flexplate has twice the material of the stock plate, is precision balanced, and will fit any OEM or aftermarket torque convertor. SFI 29.3 approved!

Buy the parts that go into BD's heavy duty transmission and save money on labour by overhauling it yourself. This Stage 3 parts kit fits 2011-2016 GMC/Chevy Duramax LML diesels that are equipped with an Allison automatic transmission.

Buy the parts that go into BD's heavy duty transmission and save money on labour by overhauling it yourself. An electronic pressure control kit is included in this Stage 4 parts kit, which fits 2011-2016 GMC/Chevy Duramax LML diesels that are equipped with an Allison automatic transmission.

2001 - 2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML ($400.00 Refundable Core Charge Will Apply)

Increase the durability, line pressure, and performance of the Allison transmission in your 2011-2019 GM 6.6L Duramax LML/L5P with the XDP EPC Solenoid Fooler Plug.

2011-2016 GM 6.6L Duramax LML ($2350.00 Refundable Core Charge Will Apply)

The Merchant Automotive 10193 Performance Transfer Case Oil for your 2001-2016 GM 6.6L Duramax is specially designed for use in GM Transfer Cases.

2011-2016 GMC Chevy Duramax LML 4WD - Increase the durability of your drivetrain with BD's heavy duty Allison A1000 transmission complete with billet input shaft, matched and dyno tested with a triple disc billet Torque Converter, and electronic pressure control kit, all in one package. A $2750.00 refundable core charge will apply.

2011-2016 GMC Chevy Duramax LML 4WD - Increase the durability of your drivetrain with BD's heavy duty Allison A1000 transmission, matched and dyno tested with an enhanced stall billet Torque Converter, all in one package. A $2750.00 refundable core charge will apply.

2001 - 2018 GMC/Chevy Duramax 6.6L (LB7 / LLY / LBZ / LMM / LML / L5P)

2001-2016 GM 6.6L Duramax LB7 LLY LBZ LMM LML w/ 5/8” Cooler Lines - BD Coolers provide 22% more cooling over other designs. The 200 Micro Extruded passages provide a large surface area to transfer heat for external air flow cooling while turbulent oil flow design promotes a more complete cooling.

Replace your leaking transmission lines for your 2017-2019 GMC/Chevy 6.6L L5P 2500/3500HD Duramax truck.

Replace your leaking transmission lines for your 2011-2014 GMC/Chevy 6.6L LML 2500/3500HD Duramax truck.