Click to zoom in
SKU: 301-900-4248 | UPC: 3019004248
ATS Diesel Extra Deep Transmission Pan for Allison LCT1000/2000 - Fits 2001-2007 Chevy Silverado Sierra 2500/3500 HD
The ATS Diesel Extra Deep Transmission Pan upgrades Allison LCT1000/2000 automatics in heavy-duty GM trucks with added fluid capacity for better cooling and lubrication during towing or high-load use.
It fits 2001-2007 Chevrolet Silverado 2500 HD/3500, GMC Sierra 2500 HD/3500, Hummer H1 Alpha, and Express/Savana vans. Cast aluminum construction with fins lowers transmission temperatures to extend component life.
Key Features
- Increased Fluid Capacity: Adds 4 full quarts of ATF over stock for improved heat dissipation and lubrication under heavy loads or towing.
- Heat-Dissipating Fins: Internal and external fins increase surface area to pull heat away from fluid faster than stock pans.
- Neodymium Magnets: Two large rare-earth magnets trap ferrous metal particles to protect internals from wear.
- Magnetic Drain Plug: 1/2-inch NPT plug simplifies fluid changes and captures additional debris.
- CNC Machined Seal: Precision-machined flange ensures leak-free fit with reusable gasket included.
Product Notes
- Includes pan gasket, magnets, drain plug, and mounting hardware for complete installation.
- Cast A356-T6 aluminum for strength and corrosion resistance in demanding diesel applications.
- MPN 301-900-4248 designed specifically for Allison LCT1000/2000 transmissions.
Installation Notes
- Professional installation recommended.
- Drain old fluid, remove stock pan, clean surfaces, then torque bolts to 15-20 ft-lbs in crisscross pattern.
- Uses factory mounting holes. no modifications required.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2001-2005 | Chevrolet | Silverado 2500 HD | LS |
| 2001-2005 | Chevrolet | Silverado 2500 HD | LT |
| 2004-2005 | Chevrolet | Silverado 2500 HD | WT |
| 2001-2005 | Chevrolet | Silverado 3500 | Base |
| 2001-2005 | Chevrolet | Silverado 3500 | LS |
| 2001-2005 | Chevrolet | Silverado 3500 | LT |
| 2004 | Chevrolet | Silverado 3500 | WT |
| 2006-2007 | Chevrolet | Express 2500 | Base |
| 2006 | Chevrolet | Express 2500 | LS |
| 2006 | Chevrolet | Express 2500 | LT |
| 2006-2007 | Chevrolet | Express 3500 | Base |
| 2001-2002 | GMC | Sierra 2500 HD | Base |
| 2001-2002 | GMC | Sierra 2500 HD | SL |
| 2001-2005 | GMC | Sierra 2500 HD | SLE |
| 2001-2005 | GMC | Sierra 2500 HD | SLT |
| 2003-2005 | GMC | Sierra 2500 HD | WT |
| 2002-2005 | GMC | Sierra 3500 | Base |
| 2001-2002 | GMC | Sierra 3500 | SL |
| 2001-2005 | GMC | Sierra 3500 | SLE |
| 2001-2005 | GMC | Sierra 3500 | SLT |
| 2004-2005 | GMC | Sierra 3500 | WT |
| 2006-2007 | GMC | Savana 2500 | Base |
| 2006-2007 | GMC | Savana 3500 | Base |
| 2006 | Hummer | H1 | Alpha |
Why Choose ATS Diesel?
- Over 20 years specializing in Allison transmission upgrades for diesel trucks.
- Built with heavy-duty materials tested in racing and commercial fleets.
- Engineered in the USA for exact fit and long-term reliability.
Frequently Asked Questions
- Q: Does this pan fit 2001-2005 Chevy Silverado 2500HD LT with Allison LCT1000?
- A: Yes, it bolts directly to Allison LCT1000/2000 in all listed 2001-2007 GM HD trucks, vans, and Hummer H1 Alpha using factory holes.
- Q: What material is the pan made from?
- A: Cast A356-T6 aluminum with internal/external fins for strength, heat rejection, and corrosion resistance.
- Q: What is included and warranty details?
- A: Includes gasket, magnets, drain plug, hardware. backed by ATS Diesel limited warranty against defects.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Secure foam-lined box, dimensions 24 x 16 x 8 inches
- Weight: 18 lbs shipping weight
ATS Diesel
ATS Diesel parts and accessories parts for Cummins, Duramax and Powerstroke diesel trucks are stocked at Black Ops Auto Works. Shop built transmission components, valve bodies, flexplates, input shafts, differential covers, fuel control parts, thermal bypass upgrades and driveline hardware. Every product is filterable by year, make, model, trim, engine and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 47 products across this focused category. What This ATS Diesel Collection Covers ATS Diesel develops heavy duty drivetrain and engine support components for pickup owners who tow, haul or build more power than original equipment parts were designed to manage. The catalog serves Ram Cummins, GM Duramax and Ford Powerstroke platforms. Built for Real Vehicle Applications Confirm the exact model year, engine, transmission code and wheel drive configuration. A Cummins 68RFE, Aisin, Allison, Ford 5R110 or Ford 6R140 uses different parts and requires ap...
View ATS Diesel Products
Drivetrain
Drivetrain parts for high-horsepower Mopar, truck, Jeep, and import platforms are stocked at Black Ops Auto Works. Shop differentials, axles, driveshafts, clutch kits, flywheels, flexplates, shifters, transmission components, ring and pinion gears, differential braces, and driveline hardware for Hellcat, Trackhawk, TRX, HEMI, LS, LT, Coyote, and turbocharged import platforms. Every drivetrain part is filterable by vehicle platform, drivetrain layout, transmission type, and power level so the correct part ships the first time. Black Ops Auto Works carries 4,765 drivetrain SKUs across differentials, axles, clutches, and transmission hardware. What This Category Covers The drivetrain transfers power from the engine to the wheels and includes the transmission, clutch, driveshafts, axles, differentials, ring and pinion gears, wheel hubs, wheel bearings, U-joints, shifters, mounts, and bushings. Upgrading these components improves power delivery, durability, and reliability under incr...
View Drivetrain Products
Transmission Pans
Deep sump transmission pans and high capacity fluid pans are stocked at Black Ops Auto Works for Allison, Ford, Ram, GM and high performance automatic transmission applications. Shop deep sump pans, cast aluminum pans, drain plugs, cooling fins, transmission filters, gasket service, fluid capacity upgrades, temperature control, towing support and automatic transmission maintenance for focused maintenance, restoration and performance builds. Every product is filterable by year, make, model, trim, engine and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 34 transmission pan SKUs across vehicle specific applications, replacement parts and performance upgrades. What This Collection Covers Fitment focused selection Transmission pans protect the lower transmission assembly, retain fluid and provide a service point for filters and fluid changes. Deep sump and cast pans can add capacity, improve heat control and simplify maintenance when matched to the...
View Transmission Pans Products
Transmissions
Transmission and drivetrain hardware for manual and automatic platforms are stocked at Black Ops Auto Works. Shop flywheels, flexplates, transmission crossmembers, mounts, coolers, valve bodies, shifters, shifter bushings, release bearings, slave cylinders, U-joints, and transmission rebuild kits for Subaru WRX and STI, Dodge Cummins diesel, GM G-Body and F-Body, BMW B58 and S58, Nissan 350Z, and Toyota GR Corolla platforms. Every part is filterable by year, make, model, and transmission type so builders can confirm the correct fitment before ordering. Black Ops Auto Works carries 1,322 transmission and drivetrain SKUs. What This Category Covers This collection spans the hardware that connects the engine to the drivetrain and manages gear selection, including flywheels, flexplates, transmission crossmembers, bell housings, transmission mounts, pans, coolers, filters, valve bodies, transmission internals, shifters, shifter bushings and cables, release bearings, slave cylinders, U...
View Transmissions Products