Transmissions - Automatic

Dorman's Exhaust Manifold Kit is a direct replacement upgrade and provide better performance for your 2003-2007 Ford 6.0L Powerstroke truck.

Dorman's Transmission Cooler Line (Outlet Tube to Trans) is designed with robust construction that can resist corrosion damage and offer superior performance for your 1994-2002 Dodge 5.9L Cummins truck.

2001-2005 GM 6.6L Duramax LB7 - GM's factory transmission lines leave something to be desired. DRP's 1/2-inch cooler line kit completely replace the OEM lines with 1500psi rated industrial hydraulic lines.

Build you own 68RFE transmission with the same parts that BD uses in their award winning performance transmissions! Fits 2007-2018 Dodge Cummins 6.7L trucks. Now comes with BD's own BIG STACK overdrive kit as well as the Protect68 plate and pressure kit!

Build your own 68RFE transmission with the same parts that BD uses in their award-winning performance transmissions! Fits 2019-2022 Dodge Cummins 6.7L trucks. Includes BD's Protect68 plate and pressure kit!

Twice as thick as the stock unit and made from forged steel, the BD FleX-Plate for your 2007.5 - 2018 Dodge 6.7L Cummins is precision-balanced and SFI-certified for use in race sanctioning bodies. Plus, a new black oxide coating resists corrosion, and prevents hydrogen embrittlement that can cause cracking. The BD FleX-Plate is a direct, bolt-in replacement for the stock converter and is also compatible with most aftermarket torque converters. Great for stock, towing or racing applications!

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission, matched with an enhanced stall billet Torque Converter, plus an auxiliary transmission oil filter kit combo package for your 2003-2004 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

BD's Transmission Pressure Enhancer delivers up to a 79% increase in holding power and up to 320psi of apply pressure, which helps prevent clutch slippage and shift flaring for the 6R140 automatic transmission in your 2011-2019 Ford 6.7L Powerstroke diesel truck. No tuning required!

Twice as thick as the stock unit and made from forged steel, the BD FleX-Plate for your 1994-2007 Dodge 5.9L Cummins is precision-balanced and SFI-certified for use in race sanctioning bodies. Plus, a new black oxide coating resists corrosion, and prevents hydrogen embrittlement that can cause cracking. The BD FleX-Plate is a direct, bolt-in replacement for the stock converter and is also compatible with most aftermarket torque converters. Great for stock, towing or racing applications!

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission (complete with billet input shaft), matched with an enhanced stall billet triple disc Torque Converter, plus an auxiliary transmission oil filter kit combo package for your 2003-2004 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

2007 - 2010 GM 6.6L Duramax LMM ($2350.00 Refundable Core Charge Will Apply)

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!

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission, matched with an enhanced stall billet Torque Converter, an auxiliary transmission oil filter kit, as well as the BD Tap Shifter combo package for your 2003-2004 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

1999 - 2003 Ford 7.3L Powerstroke 4R100 ($2000.00 Refundable Core Charge Will Apply)

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.

2001 - 2010 GM 6.6L Duramax LB7/LLY/LBZ/LMM ($400.00 Refundable Core Charge Will Apply)

2003 - 2004 Ford 6.0L Powerstroke ($2000.00 Refundable Core Charge Will Apply)

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission (complete with billet input shaft), matched with an enhanced stall billet triple disc Torque Converter, BD's Tap Shifter kit, plus an auxiliary transmission oil filter kit combo package for your 2003-2004 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

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.

Increase your 68RFE transmissions' torque holding capacity by up to 54% with BD's new BIG STACK Overdrive shaft, reaction plate and input drum kit for your 2007-2018 Dodge Cummins 6.7L with the 68RFE automatic transmission!

2005 - 2007 Ford 6.0L Powerstroke ($2000.00 Refundable Core Charge Will Apply)

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission w/ TVV Stepper Motor, matched with an enhanced stall billet Torque Converter, plus an auxiliary transmission oil filter kit combo package for your 2005-2007 Dodge Ram Cummins 5.9L 2WD turbo diesel. A $2600.00 refundable core charge will apply.

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

Increase your 68RFE transmissions' torque holding capacity by up to 33% with BD's new BIG STACK Overdrive Shaft & Reaction Plate kit for your 2007-2018 Dodge Cummins 6.7L with the 68RFE automatic transmission!

Increase the durability of your drivetrain with BD's award winning heavy duty 5R110W transmission for your 2008-2010 Ford 6.4L Powerstroke 4WD turbo diesel. Includes BD's aluminum HD deep oil pan which increases oil capacity by 6 quarts. A $2000.00 refundable core charge will apply.

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission (complete with billet input shaft) w/ TVV Stepper Motor, matched with an enhanced stall billet triple disc Torque Converter, plus an auxiliary transmission oil filter kit combo package for your 2005-2007 Dodge Ram Cummins 5.9L 2WD turbo diesel. A $2600.00 refundable core charge will apply.

2003 - 2007 Ford 6.0L Powerstroke ($400.00 Refundable Core Charge Will Apply)

This kit allows you to connect your 68RFE automatic transmission to any common pressure gauge. No more fumbling with fittings!

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission w/ TVV Stepper Motor, matched with an enhanced stall billet Torque Converter, plus an auxiliary transmission oil filter kit combo package for your 2005-2007 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

2001 - 2004 GM 6.6L Duramax LB7 ($2350.00 Refundable Core Charge Will Apply)

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission (complete with billet input shaft) w/ TVV Stepper Motor, matched with an enhanced stall billet triple disc Torque Converter, plus an auxiliary transmission oil filter kit combo package for your 2005-2007 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

2004.5 - 2006 GM 6.6L Duramax LLY ($2350.00 Refundable Core Charge Will Apply)

2007.5 - 2018 Dodge 6.7L Cummins ($600.00 Refundable Core Charge Will Apply)

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission w/ TVV Stepper Motor, matched with an enhanced stall billet Torque Converter, a BD Tap Shifter kit, plus an auxiliary transmission oil filter kit combo package for your 2005-2007 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

2006 - 2007 GM 6.6L Duramax LBZ ($2350.00 Refundable Core Charge Will Apply)

2007.5 - 2018 Dodge 6.7L Cummins ($600.00 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.

Reliably handle up to 1,500 lbs-ft of torque with BD's forged billet 12-bolt flex plate for your 1994-2007 Dodge Cummins 5.9L diesel.

Increase the durability of your drivetrain with BD's award winning heavy duty 48RE transmission (complete with billet input shaft) w/ TVV Stepper Motor, matched with an enhanced stall billet triple disc Torque Converter, BD's Tap Shifter kit, plus an auxiliary transmission oil filter kit combo package for your 2005-2007 Dodge Ram Cummins 5.9L 4WD turbo diesel. A $2600.00 refundable core charge will apply.

2007 - 2010 GM 6.6L Duramax LMM ($2350.00 Refundable Core Charge Will Apply)