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BD Diesel PressureLoc Transmission Kit

BD Diesel PressureLoc Transmission Kit

BD PressureLoc Physical Throttle Control
Fits: 94-04 Dodge 5.9L Cummins (47RE / 47RH / 48RE Trans.)
Available Transmissions: Automatic
Item Number: 1030377
Product Warranty: 1-Year Parts & Labor
Install Guide
  • NOTE: This product CAN NOT ship to California due to CARB regulations.
Prevents torque converter “shudder” and clutch slippage!

It’s strange but true—the torque converter in ’94-’01 Dodge-Cummins applications is more likely to slip at part throttle than full throttle. Why? Because the transmission’s line pressure is controlled by throttle input—the more throttle you give it, the higher the line pressure goes. The problem is, the Cummins produces its peak torque at light throttle, when line pressure is at its lowest! The innovative BD PressureLoc is designed specifically to address this problem.

The PressureLoc increases converter lock-up clutch apply pressure by 30% at light throttle by rotating the transmission’s throttle shaft to a position that approximates 3/4 throttle. Designed primarily for stock or mildly modified engine applications and for owners who have installed an exhaust brake and would like added protection from slippage. This is not a substitute for a modified valve body! For higher horsepower and/or heavily loaded applications, we recommend the addition of a BD Performance valve body.

BD Diesel PressureLoc Transmission Kit
A BD PressureLoc increases torque convertor lock-up clutch applied pressure on 1994 to 2004 Dodge trucks by 30% at light throttle pressure. This kit can easily be installed on the stock transmission and assists in preventing torque convertor shuddering and transmission slippage.

Torque convertor clutch slippage results in high heat and eventual transmission failure! The higher the horsepower, the lower the transmission line pressure is, because line pressure is controlled by the position of the throttle pedal. Diesel engines have so much torque at light throttle pedal movement and thus low clutch apply pressure when the engine is at its peak torque! You can notice a shuddering torque convertor under throttle at low speeds, and ALSO under heavy throttle with high power engines.
The PressureLoc’s function is to increase the transmission line pressure ONLY when the lock-up clutch is engaged. The PressureLoc cylinder rotates the transmission’s throttle valve shaft to simulate 3/4-throttle travel to increase the line pressure to 90% of what the valve body design can attain at wide open throttle. (NOTE: The resulting pressure must be measured and set when the kits are installed)

The PressureLoc is primarily designed for stock or mildly enhanced engine applications and owners who have installed an exhaust brake and want some extra protection. It is NOT a replacement for a modified valve body! High horsepower and heavy-loaded applications should also be equipped with a BD Valve Body with larger porting for pressures up to 180 psi.

The PressureLoc increases the clutch-applied pressure to 90% of what the valve body is capable of achieving at full throttle when you are only at ¼ to ¾ throttle travel. This kit addresses the need for more clutch holding pressure. This pressure increase remains within the valve body design. The stock valve body has 4.0 GPM flow when the torque convertor is locked up with the PressureLoc engaged. Without the PressureLoc engaged, this pressure will be 4.0 GPM or less, depending on throttle pressure.

Our testing has shown that a stock transmission front drive clutch will slip at 280 lbs of torque with the accelerator pedal at ½ throttle position, which is in the range of 75 psi of pressure, and at 410 ft lbs when the pressure is 100 psi. The torque convertor clutch will slip at 565 ft lbs with 75 psi. With a PressureLoc engaged the pressure is increased to around the 100 psi mark (130 psi on the 48RE).
NOTE: This product CAN NOT ship to California due to CARB regulations.
Product Description Order
BD-Power PressureLoc Transmission Kit
94-04 Dodge 5.9L Cummins (47RE / 47RH / 48RE Trans.)
BD Part # 1030377
Our Part # BDD1030377
Thoroughbred Diesel logo glowing Thoroughbred Diesel Performance and Repair Shop
4843 Rockwell rd.
Winchester, KY 40391
Call Toll Free: 1-866-737-4966

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