General Motors ALLISON 1000 Torque Converters
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Years: 2019 - 2020
Engines: Sierra, Silverado 2500HD, 3500HD 6.6L Gas (V8 & V8 flex), Duramax Diesel 6.6L Turbo
Part Number: 4663
Years: 2000 - 2025
Engines: 5.9L Cummins Diesel, 6.6L Duramax Diesel, 8.1L Gas, 3126E Cat Diesel
Part Number: 4642