SKU #: SC-GMAX-CAT0-LB7LLY-KIT-LC MPN #: GMAX-CAT0-LB7/LLY-KIT-LC

SunCoast Allison Transmission Rebuild Kit No Converter Category 0-1 | 01-05 GM 6.6L Duramax LB7/LLY

$1,595.00
Get 1595 points in loyalty rewards
Description Overview
Have you felt like your transmission has been slipping when switching gears? Does your truck handle heavy loads without issue or has age finally caught up to it?  Allison 5-speed transmissions were fantastic in their time with great torque capacity and some tough internal components. Although, if you use your truck for heavy duty hauling it can take it's toll on any transmission no matter how tough it is. Get your Allison transmission feeling as good as new with SunCoast's Allison Rebuild Kits. Made with advanced friction materials and exact performance specifications you can be sure your transmission is going to feel better than the first day you drove it.  Put some reliability, performance, and longevity back into your truck so you can tow, race, or just drive to work with a fantastic peace of mind. EACH KIT INCLUDES: New Clutches and Steels Custom Clutch Packs- Engineered using SunCoast's proprietary blend of Alto carbonite frictions and Raybestos SCZ frictions. These clutches feature a waffle pattern design that enhances oil retention, thereby aiding in thermal management and prolonging clutch life. Custom Steels- Precision-manufactured steels designed to complement the friction materials, ensuring optimal engagement and durability under varying load conditions. New Filters and Gaskets Spin-on Filter- Facilitates efficient fluid filtration to maintain cleanliness and longevity of the transmission system. Shallow or Deep Pan Filter (NOTE: You must select which version in options above) Gasket Kit- Comprehensive set of gaskets necessary for a complete transmission overhaul, ensuring leak-free operation and proper sealing. CATEGORY 0: The Category 0 Kit has everything listed above and is the perfect kit for anyone that's looking for a straight rebuild with quality parts with improved frictions and steels for better longevity. Rated for 300HP. CATEGORY 1: The Category 1 Kit is rated for 500HP and has everything listed above, with the upgrade/addition of: SunCoast custom billet plates SunCoast custom overhaul kit Valve body calibration kit SunCoast Filter Loc
Select Rebuild Kit

Product photos may not match the selected option. Please confirm your choice before adding to cart.

Product Price
$1,595.00
Refundable Core Deposit
+ $750.00
Price with Core Deposit
$2,345.00
  1. Pay Core Deposit with your order
  2. Return Old Part within 30 days
  3. Get Deposit Back once approved

Enter your zip and we'll see if installation is available.

  • Request quotes from local installers at checkout
  • Compare options and choose the best fit for your install

SunCoast's Allison Transmission Rebuild Kit (Category 0-1) restores a slipping Allison 5-speed with new clutches, steels, filters and gaskets; converter not included.

Fits
2001 - 2005 GM 6.6L Duramax LB7/LLY
Brand
SunCoast Performance
Best for
Rebuilding a heavy-duty Allison transmission for towing or hauling
Key features
  • New clutches and steels
  • Custom clutch packs with waffle-pattern friction design for oil retention and thermal management
  • Precision custom steels for optimal engagement and durability
  • Spin-on filter for efficient fluid filtration
  • Shallow or deep pan filter option
  • Comprehensive gasket kit for leak-free sealing
  • Category 1 adds custom billet plates, overhaul kit, valve body calibration kit, and Filter Loc
Key specs
  • Category 0 rated for 300HP
  • Category 1 rated for 500HP
Important
No converter included; you must select shallow or deep pan filter version in options.

Summarized by AI from this product’s description and specs. Confirm fitment for your year, make and engine before ordering.

Have you felt like your transmission has been slipping when switching gears? Does your truck handle heavy loads without issue or has age finally caught up to it?  Allison 5-speed transmissions were fantastic in their time with great torque capacity and some tough internal components. Although, if you use your truck for heavy duty hauling it can take it's toll on any transmission no matter how tough it is. Get your Allison transmission feeling as good as new with SunCoast's Allison Rebuild Kits. Made with advanced friction materials and exact performance specifications you can be sure your transmission is going to feel better than the first day you drove it.  Put some reliability, performance, and longevity back into your truck so you can tow, race, or just drive to work with a fantastic peace of mind.

EACH KIT INCLUDES:

  • New Clutches and Steels
    • Custom Clutch Packs- Engineered using SunCoast's proprietary blend of Alto carbonite frictions and Raybestos SCZ frictions. These clutches feature a waffle pattern design that enhances oil retention, thereby aiding in thermal management and prolonging clutch life.
    • Custom Steels- Precision-manufactured steels designed to complement the friction materials, ensuring optimal engagement and durability under varying load conditions.
  • New Filters and Gaskets
    • Spin-on Filter- Facilitates efficient fluid filtration to maintain cleanliness and longevity of the transmission system.
    • Shallow or Deep Pan Filter (NOTE: You must select which version in options above)
    • Gasket Kit- Comprehensive set of gaskets necessary for a complete transmission overhaul, ensuring leak-free operation and proper sealing.

CATEGORY 0:

The Category 0 Kit has everything listed above and is the perfect kit for anyone that's looking for a straight rebuild with quality parts with improved frictions and steels for better longevity. Rated for 300HP.

CATEGORY 1:

The Category 1 Kit is rated for 500HP and has everything listed above, with the upgrade/addition of:

  • SunCoast custom billet plates
  • SunCoast custom overhaul kit
  • Valve body calibration kit
  • SunCoast Filter Loc


NOT LEGAL FOR SALE OR USE IN CALIFORNIA
Vehicle Fitment
2001 - 2005 GM 6.6L Duramax LB7/LLY
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
About SunCoast Performance

Established in 1989 as a small-scale enterprise in picturesque Fort Walton Beach, FL, SunCoast Performance embarked on its journey with a mission to meet the rising demand for top-tier aftermarket torque converters, transmission assemblies, and components. Over the years, SunCoast has diligently identified, tested, and rectified numerous weak points within OEM transmissions and torque converters. Leveraging extensive real-world test data and cutting-edge design technology, SunCoast has emerged as a leader in quality craftsmanship, consistently surpassing competitors and exceeding customer expectations.

At the core of SunCoast's ethos lies an unwavering commitment to American-made excellence in design, manufacturing, technical support, and customer satisfaction. The company hosts bi-annual research laboratories, fostering knowledge exchange among customers and suppliers, and staying abreast of technological advancements shaping the automotive industry.

Today, SunCoast stands at the pinnacle of automotive performance, boasting a workforce of over 45 employees and occupying more than 75,000 square feet of climate-controlled facilities. In addition to manufacturing, SunCoast leases 20,000 square feet to their in-house metal supplier, National Aluminum & Alloy, ensuring complete control over the production process with access to a vast inventory of raw materials worth upwards of $2,000,000.