Chevrolet Silverado Transmission & Converter Package - BD Diesel - TowMaster Allison 1000 - 2017–2019. Purpose-built for stock or mildly modified 6.6L Duramax L5P 4WD trucks, this package delivers proven durability and confident towing performance.

The TowMaster Allison 1000 combines a modified valve body, increased clutch counts, and a revised pump to reduce slip and wear while handling higher torque. It increases torque-holding capacity by over 80% versus stock. A BD Deep aluminum pan adds approximately 3.5 extra quarts to help control temperatures under load, and every package includes the matched ProForce torque converter for consistent power transfer. Designed specifically for 2017–2019 Chevrolet Silverado/GMC Sierra 6.6L L5P 4WD applications.

Features

• Modified valve body and calibrated pump
• Increased clutch counts for added durability
• Increased line pressure to cut slip while towing
• BD Deep aluminum pan (+~3.5 quarts)
• Includes ProForce torque converter
• 2017–2019 6.6L Duramax L5P 4WD fitment

Have questions or planning a build? Call us—our team can help you choose the right package and schedule service. We offer installation and customization at our Austin, Texas and Los Angeles, California area locations. Texas: 512-982-9393  |  California: 562-981-6800

If you’re purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov