2001-2004 GM 2500HD/3500HD 6.6L LB Duramax Transmission Upgrades

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PPE 128035511 Stage 6G Transmission Upgrade Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
PPE 128035511 Stage 6G Transmission Upgrade Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

PPE

PPE 128035511 Stage 6G Transmission Upgrade Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: PPE128035511
Price
$1,529.99
PPE 128035201 Stage 5 Transmission Upgrade Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD
PPE 128035201 Stage 5 Transmission Upgrade Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD

PPE

PPE 128035201 Stage 5 Transmission Upgrade Kit | 2001-2004 GM Silverado/Sierra 2500HD/3500HD

SKU: PPE128035201
Price
$1,529.99
PPE 128010322 1800-2200 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD
PPE 128010322 1800-2200 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

PPE

PPE 128010322 1800-2200 RPM Race Billet Stator Triple Clutch Torque Converter | 1990-2022 GM Silverado/Sierra 2500HD/3500HD

SKU: PPE128010322
Price
$1,619.99
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
RevMax A1000-901 Allison 100 Billet Flexplate | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax w/ Allison 1000
RevMax A1000-901 Allison 100 Billet Flexplate | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax w/ Allison 1000

RevMax

RevMax A1000-901 Allison 100 Billet Flexplate | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax w/ Allison 1000

SKU: RMXA1000-901
Price
$695
RevMax A1000-402 Allison 1000 Billet Triple Disc Stage 5 Torque Converter (High Stall Stator +600PRM) | 2001-2006 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
RevMax A1000-402 Allison 1000 Billet Triple Disc Stage 5 Torque Converter (High Stall Stator +600PRM) | 2001-2006 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

RevMax

RevMax A1000-402 Allison 1000 Billet Triple Disc Stage 5 Torque Converter (High Stall Stator +600PRM) | 2001-2006 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: RMXA1000-402
Price
$1,649
RevMax A1000-300 Allison 1000 High Performance Valve Body Upgrade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7
RevMax A1000-300 Allison 1000 High Performance Valve Body Upgrade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

RevMax

RevMax A1000-300 Allison 1000 High Performance Valve Body Upgrade | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

SKU: RMXA1000-300
Price
$899
Premier Performance 1.111.1 1/2 inch Allison Transmission Repair Lines | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Premier Performance 1.111.1 1/2 inch Allison Transmission Repair Lines | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Premier Performance

Premier Performance 1.111.1 1/2 inch Allison Transmission Repair Lines | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PRE1.111.1
Price
$325
Premier Performance 1.111.2 5/8 inch Allison Transmission Repair Lines | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Premier Performance 1.111.2 5/8 inch Allison Transmission Repair Lines | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Premier Performance

Premier Performance 1.111.2 5/8 inch Allison Transmission Repair Lines | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: PRE1.111.2
Price
$350
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
SunCoast GMAX-CAT3-LB7/LLY-KIT CAT 3 700HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast GMAX-CAT3-LB7/LLY-KIT CAT 3 700HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast GMAX-CAT3-LB7/LLY-KIT CAT 3 700HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNGMAX-CAT3-LB7/LLY-KIT
Price
$7,429.96
SunCoast GMAX-CAT4-LB7/LLY-KIT 950+ HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast GMAX-CAT4-LB7/LLY-KIT 950+ HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast GMAX-CAT4-LB7/LLY-KIT 950+ HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNGMAX-CAT4-LB7/LLY-KIT
Price
$8,957.71
SunCoast GMAX-CAT4-LB7/LLY-KIT-LC CAT 4 950+ HP Custom Allison Rebuild Kit - No Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast GMAX-CAT4-LB7/LLY-KIT-LC CAT 4 950+ HP Custom Allison Rebuild Kit - No Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast GMAX-CAT4-LB7/LLY-KIT-LC CAT 4 950+ HP Custom Allison Rebuild Kit - No Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNGMAX-CAT4-LB7/LLY-KIT-LC
Price
$7,755.15
SunCoast GMAX-CAT2-LB7/LLY-KIT CAT 2 600HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast GMAX-CAT2-LB7/LLY-KIT CAT 2 600HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast GMAX-CAT2-LB7/LLY-KIT CAT 2 600HP Custom Allison Rebuild Kit with Converter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNGMAX-CAT2-LB7/LLY-KIT
Sale price
$7,658.15
Regular price
$7,895
SunCoast GMAX-CAT1-LB7/LLY-KIT-LC Allison Category 1 500HP Capable Transmission Rebuild Kit with outut Converter | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast GMAX-CAT1-LB7/LLY-KIT-LC Allison Category 1 500HP Capable Transmission Rebuild Kit with outut Converter | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast GMAX-CAT1-LB7/LLY-KIT-LC Allison Category 1 500HP Capable Transmission Rebuild Kit with outut Converter | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNGMAX-CAT1-LB7/LLY-KIT-LC
Price
$3,099.15
SunCoast GMAX-CAT0-LB7/LLY-KIT-LC Category 0 Allison Refresh Kit with outut Converter | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast GMAX-CAT0-LB7/LLY-KIT-LC Category 0 Allison Refresh Kit with outut Converter | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast GMAX-CAT0-LB7/LLY-KIT-LC Category 0 Allison Refresh Kit with outut Converter | 2001-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNGMAX-CAT0-LB7/LLY-KIT-LC
Price
$1,547.15
SunCoast GMAX-CAT4-LB7-0103-4WD Allison GMAX 950+HP Capable Category 4 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD
SunCoast GMAX-CAT4-LB7-0103-4WD Allison GMAX 950+HP Capable Category 4 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD

SunCoast Performance

SunCoast GMAX-CAT4-LB7-0103-4WD Allison GMAX 950+HP Capable Category 4 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD

SKU: SUNGMAX-CAT4-LB7-0103-4WD
Price
$10,961
SunCoast GMAX-CAT4-LB7-0103-2WD Allison GMAX 950+HP Capable Category 4 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD
SunCoast GMAX-CAT4-LB7-0103-2WD Allison GMAX 950+HP Capable Category 4 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD

SunCoast Performance

SunCoast GMAX-CAT4-LB7-0103-2WD Allison GMAX 950+HP Capable Category 4 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD

SKU: SUNGMAX-CAT4-LB7-0103-2WD
Price
$10,961
SunCoast GMAX-CAT3-LB7-0103-4WD Allison GMAX 700HP Capable Category 3 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD
SunCoast GMAX-CAT3-LB7-0103-4WD Allison GMAX 700HP Capable Category 3 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD

SunCoast Performance

SunCoast GMAX-CAT3-LB7-0103-4WD Allison GMAX 700HP Capable Category 3 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD

SKU: SUNGMAX-CAT3-LB7-0103-4WD
Price
$9,894
SunCoast GMAX-CAT3-LB7-0103-2WD Allison GMAX 700HP Capable Category 3 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD
SunCoast GMAX-CAT3-LB7-0103-2WD Allison GMAX 700HP Capable Category 3 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD

SunCoast Performance

SunCoast GMAX-CAT3-LB7-0103-2WD Allison GMAX 700HP Capable Category 3 Transmission Package with Converter | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD

SKU: SUNGMAX-CAT3-LB7-0103-2WD
Price
$9,894
SunCoast GMAX-LB7-GUARDIAN-0103-2WD Guardian Transmission with Converter Package | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD
SunCoast GMAX-LB7-GUARDIAN-0103-2WD Guardian Transmission with Converter Package | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD

SunCoast Performance

SunCoast GMAX-LB7-GUARDIAN-0103-2WD Guardian Transmission with Converter Package | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 2WD

SKU: SUNGMAX-LB7-GUARDIAN-0103-2WD
Sale price
$7,464.15
Regular price
$7,695
SunCoast SC-GM-GUARDIAN Billet Allison Single Disc 2000 Stall Guardian Series Torque Converter | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
SunCoast SC-GM-GUARDIAN Billet Allison Single Disc 2000 Stall Guardian Series Torque Converter | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast SC-GM-GUARDIAN Billet Allison Single Disc 2000 Stall Guardian Series Torque Converter | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: SUNSC-GM-GUARDIAN
Price
$1,353.15
SunCoast A1-VB-02 Allison Valve Body | 2002 GM 2500HD/3500HD 6.6L Duramax
SunCoast A1-VB-02 Allison Valve Body | 2002 GM 2500HD/3500HD 6.6L Duramax

SunCoast Performance

SunCoast A1-VB-02 Allison Valve Body | 2002 GM 2500HD/3500HD 6.6L Duramax

SKU: SUNA1-VB-02
Price
$1,547.15
SunCoast GMAX-LB7-GUARDIAN-0103-4WD Guardian Transmission with Converter Package | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD
SunCoast GMAX-LB7-GUARDIAN-0103-4WD Guardian Transmission with Converter Package | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD

SunCoast Performance

SunCoast GMAX-LB7-GUARDIAN-0103-4WD Guardian Transmission with Converter Package | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 4WD

SKU: SUNGMAX-LB7-GUARDIAN-0103-4WD
Price
$7,469

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DIESEL TRUCK EXPERTS STANDING BY

If you've thrown on some high-performance mods on your 2001-2004 GM 6.6L Duramax, your transmission and Transfer case will feel the strain of increased horsepower and torque to your truck's entire drivetrain. Our premium transmission upgrades for your GM 2500HD/3500HD 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 6.6L Duramax consistent performance you can count on! Our excellent transfer case help keep the heart of your 4x4 system reliable and high performing to tackle any terrain in your path! Pair your transmission and transfer case upgrades with our full array of Engine Upgrades and Fuel System Upgrades! GM Duramax Fitments: 2001, 2002, 2003, 2004 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>2001-2004 6.6L LB7

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