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94-04 Dodge 47RH/47RE/48RE BD Electronic AutoLoc Exhaust Brake Retarder

Currently, exhaust brake usage can cause high temperatures in the automatic transmission due to torque converter slippage. Only 10% to 80% of the retarding force is transferred through the fluid coupling of most torque converters. The BD AutoLoc commands the lock-up clutch of the torque converter to stay engaged when the BD Exhaust Brake is activated. This allows up to 100% of the retarding force to be transferred while in 3rd and 4th gear. Also, transmission oil temperatures will remain low because of little or no slippage occurring in the converter in these gears.


  • Maintains lock-up when the exhaust brake is activated
  • Ensuring 100% of the retarding force is being transferred in 3rd and 4th gears
  • Prevents slippage and subsequent high oil temperatures

  • 2 Hours


  • 12-Months
  • 24,000 Miles

  • This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included. (EMS:4)

PDF Manual Click Here

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