Atwood Hydraulic Brake Actuator Parts List and Schematic

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Atwood Hydraulic Brake Actuator Parts List and Schematic

Atwood's Unique Design for Superior Braking

  • Unique design creates more pressure on the brakes than in-line actuator systems.
  • Parts interchangeability between 6K and 8K actuators.
  • Lock-out feature allows use with standard hydraulic brakes for backing up. No need for specific free-backing brakes.
  • Disc brake actuators available specifically for use with disc brake systems. Supplies, even more, fluid pressure to brakes than standard hydraulic.
  • A breakaway device will set trailer brakes automatically should separation from tow ball occur.
Atwood Hydraulic Brake Actuator Schematic

Ordering Replacement Atwood Parts

Atwood Logo

Replacement Parts are no longer available, but we recommend using the UFP A-60s or A-75s. Some modifications may be needed. Possibly drilling new holes. 

  • Atwood Hydraulic Surge Brake Actuators for both DIsc and Drum Brake Applications.
  • Atwood 6,000 lb. Capacity Brake Actuators Include Model numbers: 82543, 83153, 84132, 84133, 88730, 88740
  • Atwood 8,000 lb. Capacity Brake Actuators Include Model numbers:
  • 83000, 83005, 83010, 83060, 8036


  • mario perez

    same as Allen Mast
    Looking for replacement cap for reservoir/master cylinder on model 85778 Atwood surge brake system. Looking at schematics, it is item number 15. Would appreciate any info on where I can order or purchase this item.

  • Gary huber

    looking for atwood 82543 master cylinder, or anything ro replace it

  • James Larson

    Looking for part # 36 for AT 82543 or complete unit thanks Jim

  • Terry

    Since Atwood went out of business where can you get a replacement master cylinder for a surge brake boat trailer


    I am looking for part number 885830 (Actuator replacement shock) and 85852 (Pushrod kit). Please let me know if you have it. I need it ASAP. Thanks

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