BD Diesel

Transmission

This upgraded transmission is engineered to significantly increase the durability and reliability of your drivetrain. It features a BD aluminum heavy-duty deep transmission pan, which increases oil capacity by 3.5 quarts to improve cooling and fluid stability under load.

Internal upgrades include high-energy GPZ friction material and an increase in steel mass to improve heat dissipation and clutch durability. Clutch capacity is substantially increased throughout the transmission with the following configurations: C1 – 8 clutches (14% increase over stock), C2 – 7 clutches (17% increase), C3 – 7 clutches (75% increase), C4 – 7 clutches (17% increase), and C5 – 7 clutches (17% increase). Every transmission is dyno tested to ensure proper operation and performance before delivery.

Torque Converter

The torque converter features an enhanced stall speed optimized for street and towing applications. Machined pistons and heavy-duty springs absorb engagement shock, while a stamp-forged, one-piece cover eliminates warpage caused by clutch heat. The taller cover design allows for more rebuild cycles over the life of the converter.

A trapezoid tooth design with tighter tolerances improves torque transfer, while self-centering teeth increase contact area to reduce wear and chatter. Thrust bearings are used instead of plastic thrust washers for increased durability. A precision riveting process ensures proper alignment and eliminates vibration or embrittlement associated with welding. Cast stator designs maximize torque multiplication, and new sprag components ensure long-term reliability. Furnace-brazed fins reduce internal leakage for improved fluid coupling efficiency, and overall weight is reduced by 12 pounds compared to competing designs.

Warranty

This transmission and torque converter package is backed by a 36-month or 150,000-mile parts warranty, along with 12 months or 24,000 miles of labor coverage.