The BD Diesel 6R140 Transmission & Converter Package, part number 1064514BM, is designed to meet the demanding needs of heavy-duty fleet applications and high-torque diesel setups. This package includes a dyno-tested transmission paired with a high-performance torque converter, ensuring reliable power transfer and enhanced durability under severe towing, street, or track conditions. The transmission features BD’s own Heavy Duty pan, which provides increased fluid capacity for improved cooling and lubrication during extended heavy-duty use. Built for strength and longevity, this setup is ideal for users seeking a dependable upgrade to handle the increased torque and horsepower of modern diesel engines.
The transmission incorporates several advanced features such as custom BD patented pressure plates that increase clutch count without sacrificing strength, an upgraded tig-welded input shaft designed to withstand demanding applications, and a four-surface clutch assembly that doubles the OEM friction area for better engagement. An electronic line pressure controller capable of up to 300 psi at wide-open throttle (WOT) allows precise pressure management, optimizing performance and durability. Clutch counts have been increased across multiple gears—intermediate, overdrive, forward, and direct—by as much as 60% over stock, providing higher clutch capacity for improved torque handling.
The included torque converter is ideal for heavy towing or high horsepower applications, delivering increased holding power while maintaining drivability. The package features a billet intermediate shaft, billet clutch retainer, and a brand new, high-performance valve body—components that contribute to the robust strength and reliability of the transmission system. With its furnace-brazed pump and turbine fins, this transmission ensures efficient heat dissipation and consistent power delivery. Designed for fitment on 2017 Ford F-250 and F-350 Super Duty trucks with 6.7L Power Stroke engines, it is a comprehensive upgrade that maximizes the vehicle’s towing capacity and operational lifespan.
This high-performance transmission and converter package is a critical upgrade for fleet operators, towing professionals, and enthusiasts seeking maximum durability and power transfer in their diesel trucks, all built to meet or exceed OEM standards for long-term reliability and efficiency.
Features:
- Heavy-duty transmission with increased clutch capacity for high torque handling
- Premium friction materials for smooth engagement and longevity
- Enhanced thermal capacity to prevent clutch slippage under severe towing conditions
- Long-term drivetrain reliability through robust components and precise engineering
Fitment:
Ford F-250 Super Duty King Ranch 2017 to 2019
Ford F-250 Super Duty Lariat 2017 to 2019
Ford F-250 Super Duty Limited 2018 to 2019
Ford F-250 Super Duty Platinum 2017 to 2019
Ford F-250 Super Duty XL 2017 to 2019
Ford F-250 Super Duty XLT 2017 to 2019
Ford F-350 Super Duty King Ranch 2017 to 2019
Ford F-350 Super Duty Lariat 2017 to 2019
Ford F-350 Super Duty Limited 2018 to 2019
Ford F-350 Super Duty Platinum 2017 to 2019
Ford F-350 Super Duty XL 2017 to 2019
Ford F-350 Super Duty XLT 2017 to 2019













