BD Diesel Heavy-Duty Automatic Transmission

The BD Diesel automatic transmission is a heavy-duty replacement transmission assembly. It is built to increase the durability of your drivetrain. It has revised oil circuits, extra clutches and stronger internals. BD says it handles up to 300% more power and torque than the stock transmission. It suits towing, hauling and high-horsepower diesel applications.

Key Features:

• Revised oil circuits and increased main line oil pressure
• Extra clutches and added friction plates, with high-energy clutch material
• 20% more friction surface area
• Modified power pistons and new return springs
• Modified separator plate for short, crisp shifts
• New converter lock-up valve to boost lock-up pressures
• Updated lube circuit, regulator and pressure release spring
• New A and B trim valves, springs and solenoids

BD Rigid Aluminum Heavy-Duty Transmission Pan:

• Adds 3.5 qt of extra oil capacity
• Reduces case flex and internal oil leakage
• Heat-dissipating fins help keep temperatures down
• Magnetic drain plug catches metal debris

Clutch Count:

• C1: 8
• C2: 7
• C3: 6
• C4: 6
• C5: 7

This upgraded transmission gives you stronger internals, better heat control and firmer, more consistent shifts for demanding diesel use.