BD Diesel Towmaster Transmission & Converter Package

2013–2018 Ram 3500 6.7L Diesel

Part #: 1064274SS

Overview

The BD Diesel Towmaster Transmission & Converter Package is a heavy-duty upgrade designed specifically for the 2013–2018 Ram 3500 equipped with the 6.7L Cummins diesel engine. Engineered to handle the increased output of modified and high-performance diesel engines, this package combines a robust Aisin AS69RC transmission with a matching OE style ProForce torque converter. It offers enhanced durability, improved torque capacity, and reliable operation under demanding towing and hauling conditions.

This transmission package is ideal for truck owners who have upgraded their engine performance or require a more rugged transmission solution to replace the factory unit. By addressing common failure points and improving clutch capacity, the Towmaster package delivers peace of mind and long-lasting performance for heavy-duty applications.

Key Features

Built to withstand the rigors of modified diesel engines and heavy towing, the BD Diesel Towmaster package incorporates several advanced features:

• Proprietary hardened billet K2 hub and billet K3 drum to eliminate primary transmission failure points
• Increased clutch capacity in K2, K3, and B1 clutch packs for enhanced torque handling and durability
• Upgraded valve body with a stiffer pressure regulator spring to boost maximum line pressure and improve clutch apply
• Deep sump transmission pan designed to enhance fluid cooling and maintain optimal operating temperatures
• Custom nitrile gaskets that provide superior leak resistance compared to OEM cork gaskets
• Includes OE style ProForce torque converter engineered for seamless integration and reliable torque transfer
• Heavy-duty construction tailored for the demands of towing, hauling, and modified diesel engines

Construction & Design

The Towmaster transmission is meticulously engineered using high-strength billet components to reinforce the most vulnerable areas of the Aisin AS69RC transmission. The billet K2 hub and K3 drum replace weaker factory parts, significantly reducing the risk of failure under high torque loads. The clutch packs have been upgraded with increased capacity to handle the power from modified engines without slipping or premature wear.

The valve body upgrade includes a stiffer pressure regulator spring, which raises line pressure to ensure firmer clutch engagement and improved shift quality. The deep sump pan improves fluid circulation and cooling, helping to maintain transmission longevity during heavy use. Additionally, the use of custom nitrile gaskets ensures a tight, leak-free seal, enhancing reliability over time.

Installation & Fitment

This transmission and converter package is a direct fit replacement for the 2013–2018 Ram 3500 6.7L diesel models. Designed to integrate seamlessly with existing drivetrain components, it requires no major modifications for installation. Professional installation is recommended to ensure proper torque converter alignment and fluid fill, maximizing the performance and durability benefits of the Towmaster package.

What's Included

• Aisin AS69RC Towmaster heavy-duty transmission
• OE style BD Diesel ProForce torque converter
• Deep sump transmission pan
• Custom nitrile gaskets for leak-free sealing
• Upgraded valve body with enhanced pressure regulator spring

Ideal For

This package is perfect for Ram 3500 owners who have modified their 6.7L Cummins diesel engines for increased power or torque and require a transmission capable of handling the added stress. It is also an excellent choice for those who tow heavy loads regularly and need a transmission that offers improved durability and reliability over the factory unit. Whether upgrading for performance or replacing a worn transmission, the BD Diesel Towmaster package provides a robust solution engineered for demanding diesel applications.

BD Diesel Performance designs and manufactures diesel performance parts aimed at stronger power delivery, improved reliability, and heavy-duty capability. Their lineup spans turbo and fueling upgrades, manifolds, intercoolers, and other supporting components—built for Cummins, Power Stroke, and Duramax owners who want more torque for towing, work, or competition.