2017-2019 GM 2500HD/3500HD 6.6L L5 Duramax Transmission Upgrades

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SunCoast 37711-12 Shallow Filter with Spin-On Transmission Filter | 2007-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast 37711-12 Shallow Filter with Spin-On Transmission Filter | 2007-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast 37711-12 Shallow Filter with Spin-On Transmission Filter | 2007-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUN37711-12
Sale price
$28.13
Regular price
$42
Mag-Hytec GM4L80E-A Transmission Pan | 1992-2022 Applications
Mag-Hytec GM4L80E-A Transmission Pan | 1992-2022 Applications

Mag-Hytec

Mag-Hytec GM4L80E-A Transmission Pan | 1992-2022 Applications

SKU: MAGGM4L80E-A
Price
$370.98
SunCoast A1-VB-LML/L5P Allison Valve Body | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast A1-VB-LML/L5P Allison Valve Body | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast A1-VB-LML/L5P Allison Valve Body | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNA1-VB-LML/L5P
Price
$1,644.15
SunCoast A1-BFP-4 Billet Flex Plate | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
SunCoast A1-BFP-4 Billet Flex Plate | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SunCoast Performance

SunCoast A1-BFP-4 Billet Flex Plate | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: SUNA1-BFP-4
Price
$480.15
PPE 128010324 2000-2200 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD
PPE 128010324 2000-2200 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

PPE

PPE 128010324 2000-2200 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

SKU: PPE128010324
Price
$1,619.99
PPE 128010328 2700-3000 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD
PPE 128010328 2700-3000 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

PPE

PPE 128010328 2700-3000 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

SKU: PPE128010328
Price
$2,497.49
BD Diesel 1041260 BD Diesel Billet Allison Flexplate | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
BD Diesel 1041260 BD Diesel Billet Allison Flexplate | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

BD Diesel

BD Diesel 1041260 BD Diesel Billet Allison Flexplate | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: BDD1041260
Price
$454.95
PPE 128052020 Black Standard Profile Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 128052020 Black Standard Profile Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 128052020 Black Standard Profile Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE128052020
Price
$260.99
PPE 128052010 Brushed Standard Profile Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 128052010 Brushed Standard Profile Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 128052010 Brushed Standard Profile Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE128052010
Price
$260.99
PPE 128051720 Heavy-Duty Cast Aluminum Deep Transmission Pan Black | 2015-2025 GM Silverado/Sierra 2500HD/3500HD with 8L45/8L90 Transmission
PPE 128051720 Heavy-Duty Cast Aluminum Deep Transmission Pan Black | 2015-2025 GM Silverado/Sierra 2500HD/3500HD with 8L45/8L90 Transmission

PPE

PPE 128051720 Heavy-Duty Cast Aluminum Deep Transmission Pan Black | 2015-2025 GM Silverado/Sierra 2500HD/3500HD with 8L45/8L90 Transmission

SKU: PPE128051720
Price
$314.99
PPE 128035515 Stage 6G Transmission Upgrade Kit 800HP+ | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 128035515 Stage 6G Transmission Upgrade Kit 800HP+ | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 128035515 Stage 6G Transmission Upgrade Kit 800HP+ | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE128035515
Price
$1,439.99
PPE 128035514 Stage 6G Transmission Upgrade Kit 600-800HP | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
PPE 128035514 Stage 6G Transmission Upgrade Kit 600-800HP | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

PPE

PPE 128035514 Stage 6G Transmission Upgrade Kit 600-800HP | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PPE128035514
Sale price
$1,439.99
Regular price
$1,599.99
Wehrli 100140 Allison Transfer Case Brace | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Wehrli 100140 Allison Transfer Case Brace | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Wehrli Custom Fab

Wehrli 100140 Allison Transfer Case Brace | 2011-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: WCF100140-GB
Price
From $179.45
ATS 309-845-4440 Stage 4 Allison LCT1000 Crate Transmission | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P PTO 4WD
ATS 309-845-4440 Stage 4 Allison LCT1000 Crate Transmission | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P PTO 4WD

ATS Diesel Performance

ATS 309-845-4440 Stage 4 Allison LCT1000 Crate Transmission | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P PTO 4WD

SKU: ATS309-845-4440
Price
$8,081.95
PPE 128051902 6L90 Transmission Pan Gasket | 2007-2019 GM Silverado 2500HD/3500HD 6.0L V8 Gas
PPE 128051902 6L90 Transmission Pan Gasket | 2007-2019 GM Silverado 2500HD/3500HD 6.0L V8 Gas

PPE

PPE 128051902 6L90 Transmission Pan Gasket | 2007-2019 GM Silverado 2500HD/3500HD 6.0L V8 Gas

SKU: PPE128051902
Sale price
$17.99
Regular price
$19.99
SunCoast A1-BC2 Allison Billet C2 Clutch Hub | 2004-2019 GM Silverado/Sierra 2500HD/3500HD
SunCoast A1-BC2 Allison Billet C2 Clutch Hub | 2004-2019 GM Silverado/Sierra 2500HD/3500HD

SunCoast Performance

SunCoast A1-BC2 Allison Billet C2 Clutch Hub | 2004-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: SUNA1-BC2
Sale price
$606.25
Regular price
$625
SunCoast T116002ASC Complete Gasket Overhaul Kit | 2001-2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast T116002ASC Complete Gasket Overhaul Kit | 2001-2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast T116002ASC Complete Gasket Overhaul Kit | 2001-2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNT116002ASC
Price
$363.75
SunCoast A1-109102 Billet Output Shaft | 2011-2018 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast A1-109102 Billet Output Shaft | 2011-2018 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast A1-109102 Billet Output Shaft | 2011-2018 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNA1-109102
Sale price
$727.50
Regular price
$755
PPE 128020100 Billet Input Shaft | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
PPE 128020100 Billet Input Shaft | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

PPE

PPE 128020100 Billet Input Shaft | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P

SKU: PPE128020100
Price
$899.99
BD Diesel 1061650 Allison 1000 Deep Sump Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD
BD Diesel 1061650 Allison 1000 Deep Sump Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD

BD Diesel

BD Diesel 1061650 Allison 1000 Deep Sump Transmission Pan | 2001-2019 GM Silverado/Sierra 2500HD/3500HD

SKU: BDD1061650
Price
$430.95
PPE 128010326 2500HD-2700 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD
PPE 128010326 2500HD-2700 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

PPE

PPE 128010326 2500HD-2700 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

SKU: PPE128010326
Price
$1,799.99
SunCoast SC-GM-RANGER Ranger Series Allison Stock Transmission with Converter | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast SC-GM-RANGER Ranger Series Allison Stock Transmission with Converter | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast SC-GM-RANGER Ranger Series Allison Stock Transmission with Converter | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNSC-GM-RANGER
Price
$6,645
Randy's Transmission 311241031 Stage 2 Allison 1000 Transmission 700HP Max | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Randy's Transmission 311241031 Stage 2 Allison 1000 Transmission 700HP Max | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Randy's Transmissions

Randy's Transmission 311241031 Stage 2 Allison 1000 Transmission 700HP Max | 2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: RTS311241031
Price
$6,995
Randy's Transmission 311241030 Stage 1 Allison 1000 Transmission | 2001-2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Randy's Transmission 311241030 Stage 1 Allison 1000 Transmission | 2001-2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Randy's Transmissions

Randy's Transmission 311241030 Stage 1 Allison 1000 Transmission | 2001-2017 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: RTS311241030
Price
$4,795

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DIESEL TRUCK EXPERTS STANDING BY

If you've stacked on some high-performance mods on your 2017-2019 GM 6.6L Duramax L5P, chances are your transmission will start to feel the strain of increased horsepower and torque to your truck's entire drivetrain. Our premium transmission upgrades for your GM 2500/3500 truck ensures your transmission stays in one place when you add on a ton power for improved drivability and towing capability. Here at Alligator Performance, we offer transmission upgrades such as transmission pans, torque converters, flex plates, modules, and even complete transmissions to give your GM Sierra/Silverado 2500/3500 consistent performance you can count on! GM Duramax Fitments: 2017, 2018, 2019 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.

GM Duramax>2017-2019 6.6L L5P

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