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This ATS Diesel billet flexplate is built to transfer increased diesel torque while maintaining the required crankshaft, converter, starter, and transmission relationship. Review the verified fitment, exact configuration, specifications, included components, and installation requirements below before ordering.
Key Features
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2001-2004 | Chevrolet | Silverado 2500 HD | |
| 2001-2004 | Chevrolet | Silverado 3500 | |
| 2001-2004 | GMC | Sierra 2500 HD | |
| 2001-2004 | GMC | Sierra 3500 |
Specifications
| Brand | ATS Diesel Performance |
|---|---|
| Manufacturer Part Number | 305-900-4248 |
| Product Type | Transmission Flexplate |
| Condition | New |
| Official Configuration | 2001-2005 LB7 / LLY |
| Engine Compatibility | 6.6L Duramax |
| Manufacturer GTIN | 00840440597902 |
| Manufacturer Reference | ATS Allison Billet Flexplate Fits 2001-2019 6.6L Duramax |
What's Included
One new ATS Diesel component in the exact configuration shown. Gaskets, hardware, wiring, fittings, fluids, filters, tuning, and companion parts are included only when the manufacturer listing expressly states they are part of this exact configuration.
About ATS Diesel Performance
ATS Diesel Performance develops transmission, turbocharger, exhaust, fuel-system, and drivetrain components for Dodge, Ram, Ford, and GM diesel trucks. Product selection remains exact-application specific.
Related ATS Diesel Parts
Browse the ATS Diesel collection for additional transmission, turbocharger, fuel-system, and drivetrain components.
Frequently Asked Questions
Does this flexplate fit 2001-2004 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500, GMC Sierra 2500 HD, GMC Sierra 3500?
Those are the verified vehicle applications. Also confirm 6.6L Duramax, production split, factory equipment, and every ATS application note before ordering.
Why must the transmission match this flexplate?
The crank pattern, converter pattern, starter position, balance, tooth count, and transmission family must match. A similar-looking flexplate is not proof of compatibility.
Are new flexplate bolts required?
Follow the current ATS and vehicle procedures for bolt replacement, thread preparation, torque sequence, converter spacing, and runout. Do not reuse torque-to-yield hardware where replacement is required.
Installation Instructions
Use the current ATS Diesel instructions and vehicle service information. Verify the exact application, required tools, fasteners, seals, fluids, calibration, torque values, clearances, and startup or relearn procedure. Professional installation is recommended for internal transmission, turbocharger, fuel-system, and driveline work.
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