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


  • Allan 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.

  • Wes

    need new master cylinder or rebuild kit for my trailer .. atwood part 85841 is the master cylinder or what is available ?
  • Douglas Stanford

    Need a Atwood 171 master cylinder to replace old rusty one. Do you possibly have one lying around on a shelf? I know Atwood is outta business and these are probably impossible to find. Thanks for your time

  • paul

    trailer hitch will lockup once in awhile after backing in.

  • Bob

    ? Do you have a Atwood complete actuator. ? Price .

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