Trailer Surge Brakes | Surge Actuators & Repair Parts

Surge Brakes

We have a large selection of trailer surge brake actuators, brake pumps, and surge brake repair parts and accessories!

Here are some tips when troubleshooting your trailer's surge brakes!



Price $74.97

ATW-85841
Atwood - Master Cylinder for Atwood Drum Brake Actuator (Obsolete/Discontinued)

Brake master cylinder for Atwood Model 60 surge acuator. Includes internal piston, seals and spring
Price $14.95

ATW-85842
Atwood - Shoulder Bolt Replacement Kit (Obsolete/Discontinued)

Shoulder bolt replacement kit - Replaces front shock bolts for Atwood brake systems
Add to cart
Price $48.95

ATW-85852
Atwood - Push Rod Replacement Kit (Obsolete/Discontinued)

Push rod replacement kit for Atwood Brake Actuators - Replaces push rod, break-away cable, master cylinder boot,and misc nuts...
Price $569.00

CMI-SUN-SURGE01
Centreville Trailer Parts LLC - Sunbelt Hydraulic Surge Unit on Plate

Sunbelt use - Demco DA10 hydraulic surge unit mounted on a 6 hole steel plate - Replacement units painted Sunbelt Green
Add to cart
Price $8.79

DEM-03866-95
Demco - Surge Brake Actuator Lever Guide

Guide for On/Off lever for Demco trailer surge brake actuators - Emergency lever guide
Add to cart
Price $19.54

DEM-03876
Demco - Surge Brake Master Cylinder Cap

Master cylinder filler cap for Demco trailer brake system
Add to cart
Price $12.49

DEM-05408
Demco - 42" Surge Brake Actuator Safety Cable

Lanyard breakaway cable for Demco hydraulic surge brake systems - Automatically activates trailer brakes if the trailer...
Add to cart
Price $9.39

DEM-05951
Demco - Surge Brake Actuator Safety Lever

Breakaway lever for Demco model trailer surge brake actuators
Add to cart
Price $5.34

DEM-10964
Demco - Master Cylinder Spacer Block for DA10/DA20 Surge Actuators

Spacer block for brake master cylinder assembly for model DA10 and DA20 hydraulic surge brake actuators for trailers
Add to cart
Price $42.45

DEM-10965
Demco - Surge Brake Actuator Top Slide Channel

Upper wear pad/spacer for master cylinder assembly housing for model DA10, DA20, and DA91 surge brake actuators
Add to cart
Price $42.45

DEM-10966
Demco - Surge Brake Actuator Bottom Slide Channel

Lower wear pad/spacer for master cylinder assembly housing for model DA10, DA20, and DA91 surge brake actuators
Add to cart
Price $3.36

DEM-10967
Demco - Side Spacer Block for DA91 Surge Actuator

Side spacer blocks used in the assembly of Model DA91 hydraulic surge brake actuator - 2 required
Add to cart
Price $121.73

DEM-11047-97
Demco - 6 Hole Down Inner Slide - DA20 - Primer

6 hole down inner slide for DA20 surge brake actuator - Red primer painted
Add to cart
Price $123.06

DEM-11060-97
Demco - 6 Hole Down Inner Slide - DA10 - Primer

6 hole down inner slide for DA10 surge brake actuator - Red primer painted
Add to cart
Price $98.37

DEM-11077-97
Demco - 4 Hole Up Inner Slide - DA91 - Primer

4 hole up inner slide for DA91 surge brake actuator - Red primer painted
Add to cart
Price $14.06

DEM-11674-95
Demco - Solenoid Cover - DA10 & DA91 - Zinc

Brake solenoid cover for DA10, DA12.5, and DA91 surge brake actuators - Zinc plated
Add to cart
Price $11.03

DEM-12200
Demco - 28" Brake Actuator Safety Cable

Breakaway cable with hook for hydraulic actuators - 28" overall length - Fits DA66B, DA86B, and DA91
Add to cart
Price $9.24

DEM-12557
Demco - Master Cylinder Fill Plate - 5650 & 5672 Master Cylinders

Master cylinder fill plate for 5650 and 5670 master cylinders - For new style surge units without threaded hole in case for...
Add to cart
Price $82.28

DEM-5650
Demco - Master Cylinder Kit for Surge Actuators with Drum Brakes

Composite replacement master cylinder for all Demco DA91 and DA20 surge units with drum brakes
Add to cart
Price $82.28

DEM-5672
Demco - Master Cylinder Kit for Surge Actuators with Disc Brakes

Replacement master cylinder kit for Demco disc brake surge actuators - Fits DA66, DA86, DA91, DA10, and DA20 Demco actuators
Add to cart
Price $326.04

DEM-8101222
Demco - 12.5k DA10 Drum Surge Unit - Channel Center - No Mount Outer Case

Demco DA10 Surge brake actuator for trailers equipped with drum brakes - 4 hole center channel - No mount on outer case, must...
Add to cart
Price $453.55

DEM-8102511
Demco - 12.5k DA10 Drum Surge Unit - 2-5/16" EZ-Latch - Drop Tube - Standard Outer Case

2 5/16" "eZ-Latch" Demco DA10 surge brake actuator for trailers equipped with drum brakes - Zinc plated - Drop tube - Standard...
Add to cart
Price $383.07

DEM-8103432
Demco - 12.5k DA10 Drum Surge Unit - 12" Channel Down - No Mount Outer Case

DA10 Surge brake actuator for trailers equipped with drum brakes - 12" 6 hole channel down - 12,500 lbs capacity - No mount...
Add to cart
Price $522.16

DEM-8104311
Demco - 12.5k DA10 Disc Surge Unit - 2-5/16" EZ-Latch - Drop Tube - Universal Outer Case

2 5/16" eZ-Latch Demco DA10 surge brake actuator for trailers equipped with disc brakes - Zinc plated - Drop tube - Universal...
Add to cart
Price $416.11

DEM-8104411
Demco - 12.5k DA10 Disc Surge Unit Without Solenoid - 2-5/16" EZ-Latch - Drop Tube - Universal...

2 5/16" eZ-Latch Demco DA10 surge brake actuator for trailers equipped with disc brakes - Zinc plated - Drop tube - Universal...
Price $364.39

DEM-8104831
Demco - 12.5k DA10 Drum Surge Unit - Channel Down - 6 Hole Outer Case

DA10 Surge brake actuator for trailers equipped with drum brakes - 4 hole channel down - 6 hole outer case - 12,500 lbs...
Add to cart
Price $447.16

DEM-8202022
Demco - 20k DA20 Drum Surge Unit - Channel Center - No Mount Outer Case

DA20 Surge brake actuator for trailers equipped with drum brakes - 4 hole channel center - No mount outer case, must be welded...
Add to cart
Demco - 6k DA66B Drum Surge Unit - Top Mount -...
  • Online only
Quick view
Price $185.59

DEM-8605001
Demco - 6k DA66B Drum Surge Unit - Top Mount - 2" Lever Lock Coupler

Demco DA66B surge brake actuator for trailers equipped with drum brakes - Top mount - 2" Lever lock ball coupler - 6000 lbs...
Add to cart
Price $214.89

DEM-8605101
Demco - 6k DA66B Disc Surge Unit - 2" Lever Lock Coupler

DA66B surge brake actuator for trailers equipped with disc brakes - 2" lever lock ball coupler - 6000 lbs capacity - With...
Add to cart
Price $219.11

DEM-8608601
Demco - 8.6k DA86 Drum Surge Unit - 2" EZ-Latch - Bolt On Case

DA86 Surge brake actuator for trailers equipped with drum brakes - 2" eZ-Latch ball coupler - Bolt on case - 8600 lbs capacity...
Add to cart
Price $266.44

DEM-8608611
Demco - 8.6k DA86 Disc Surge Unit - 2" EZ-Latch - Bolt On Case

DA86 Surge brake actuator for trailers equipped with disc brakes - 2" eZ-Latch ball coupler - Bolt on case - 8600 lbs capacity...
Add to cart
Price $374.94

DEM-8750311
Demco - 8K DA91 Disc Surge Unit - 2-5/16" EZ-Latch - Drop Tube - 5 Hole Mount Outer Case

2 5/16" eZ-Latch Demco DA91 surge brake actuator for trailers equipped with disc brakes - Zinc plated - Drop tube - 5 hole...
Add to cart
Price $307.95

DEM-8759231
Demco - 7.5k DA91 Drum Surge Unit - Channel Down - Standard Outer Case

DA91 Surge brake actuator for trailers equipped with drum brakes - 4 hole channel down - Standard outer case - 7500 lbs capacity
Add to cart
Price $203.20

DEM-8759241
Demco - 7.5k DA91 Drum Surge Unit - Channel Up - Standard Outer Case

DA91 Surge brake actuator for trailers equipped with drum brakes - 4 hole channel up - Standard outer case - 7500 lbs capacity
Add to cart
Price $304.33

DEM-8759411
Demco - 8K DA91 Drum Surge Unit - 2-5/16" EZ-Latch - Drop Tube - Standard Outer Case

2 5/16" eZ-Latch Demco DA91 surge brake actuator for trailers equipped with drum brakes - Zinc plated - Drop tube - Standard...
Add to cart
Price $204.55

DEM-8759942
Demco - 8k DA91 Drum Surge Unit - Channel Up - No Mount Outer Case

DA91 Surge brake actuator for trailers equipped with drum brakes - 4 hole channel up - No mount outer case, must be welded on...
Add to cart