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!



Active filters

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
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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's - 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
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
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Price $19.54

DEM-03876
Demco - Surge Brake Master Cylinder Cap

Master cylinder filler cap for Demco trailer brake system
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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...
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Price $9.39

DEM-05951
Demco - Surge Brake Actuator Safety Lever

Breakaway lever for Demco model trailer surge brake actuators
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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...
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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
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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
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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...
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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...
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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...
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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...
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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...
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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...
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Demco - 6k DA66B Drum Surge Unit - Top Mount -...
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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...
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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...
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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...
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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...
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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...
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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
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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
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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...
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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...
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Price $3.29

DEM-SB12099
Demco - .031 Brake Orifice Fitting - 3/8" Thread

.031 Brass brake orifice fitting - 3/8" male to female straight brass brake line connection fitting - Screws into rear of...
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Price $44.37

DEM-SB12426
Demco - Damper Shock for Demco Surge Actuator

Damper shock for Demco DA10, DA20, and DA91 surge brake actuator
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Price $792.42

DEX-K71-650-00
Dexter - Electric / Hydraulic Brake Actuator - Drum Brakes

Electric/Hydraulic brake actuator for trailers equipped with drum brakes - For use on trailers with 1 to 3 axles -1000 psi
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Price $825.93

DEX-K71-651-00
Dexter - Electric / Hydraulic Brake Actuator - Disc Brakes

Electric/Hydraulic brake actuator for trailers equipped with disc brakes - For use on trailers with 1 to 3 axles -1600 psi
Price $14.25

MCC-4912K71
McMaster-Carr - Manual Reverse Lockout Valve

For use as a manual reverse lockout of disc brakes on surge applications - Male end fits back of master cylinder, female end...
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Price $246.95

TDE-82400
Tie Down Engineering - 6.6k Model 660 Disc Surge Brake Unit

Model 660 disc brake surge actuator - Unique all aluminum master cylinder incorporates the shock absorber into the master...
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Price $229.67

TDE-82401
Tie Down Engineering - 6.6k Model 660 Drum Surge Brake Unit

Model 660 drum brake surge actuator - Unique all aluminum master cylinder incorporates the shock absorber into the master...
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Price $349.67

TDE-82402
Tie Down Engineering - 8.5k Model 800 Disc Surge Brake Unit

Model 800 disc brake surge actuator - 8500 lbs capacity - Includes backup solenoid
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Price $53.46

TIT-10187
Titan - Master Cylinder Rebuild Kit - 1-1/4" Bore

Master cylinder rebuild kit for Titan Model 10,16, and 20 surge brake actuators - For 1 1/4" bore master cylinder # 2374400
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Price $1.08

TIT-10209
Titan - Model 10 & 16 Top & Bottom Bearing - 0.125"

Plastic top and bottom bearing for Titan Model 10 and 16 surge brake actuators - 6 needed total
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Price $5.11

TIT-10526
Titan - Breakaway Lock - Left Side

Breakaway lock for Titan model 10, 16, and 20 surge brake actuators - Left side - Use with right side latch TIT-10527 - Zinc...
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Price $5.11

TIT-10527
Titan - Breakaway Lock - Right Side

Breakaway lock for Titan model 10, 16, and 20 surge brake actuators - Right side - Use with left side latch TIT-10526 - Zinc...
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Price $19.01

TIT-10541
Titan - Breakaway Lever Assembly

Breakaway lever assembly for Titan model 10, 16, and 20 surge brake actuators - Zinc plated
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Price $2.35

TIT-10552
Titan - Breakaway Lever Seal

Rubber gasket/seal for latch assembly on breakaway handle of the Titan Model 10, 16, and 20 surge brake actuators
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Price $6.70

TIT-12098
Titan - .015" Brake Orifice Fitting - 1/8" Thread

Brass hydraulic orifice connector for Titan surge actuator - Drum brake style - 1/8" NF thread - Orifice size: 1/64" (.015")
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Price $6.70

TIT-1209900
Titan - .015" Brake Orifice Fitting - 1/2" Thread

Brass hydraulic orifice connector for Titan early type surge actuators - Drum brake style - 1/2" NF thread - Orifice size:...
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Price $1.09

TIT-12427
Titan - Side Bearing - .075"

Plastic Side bearing for Titan Model 6, 10, and 16 surge brake actuators - 8 needed - .075" thick
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Price $2.95

TIT-15070
Titan - Master Cylinder Cover

Titan master cylinder cover - Black plastic - For model 10, 16, and 20 surge brake actuators
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Price $12.21

TIT-16018
Titan - Front Roller Cover

Front roller cover for Titan Model 10 surge brake actuator - Zinc plated
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Price $15.58

TIT-16019
Titan - Front Roller

Front roller for Titan Model 10, 16, and 20 surge brake actuators - Steel
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Price $73.18

TIT-23361
Titan - Master Cylinder for Titan Model 60 Surge Actuator w/ Drum Brakes

Master cylinder for Titan Model 60 surge brake actuator with drum brakes - Housing ONLY, no internal parts included - Forged...
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Price $3.01

TIT-23389
Titan - Model 60 Master Cylinder Cap Gasket

Rubber gasket for master cylinder filler cap on Titan Model 60 surge brake actuator
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Price $2.01

TIT-23414
Titan - Model 60 Master Cylinder Gasket

Paper gasket for master cylinder on Titan Model 60 surge brake actuator
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Price $8.05

TIT-23566
Titan - Model 60 Master Cylinder Cover

Cover for master cylinder on Titan Model 60 surge brake actuator - Zinc plated steel
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Price $141.51

TIT-23744
Titan - Master Cylinder for Surge Actuator w/ Drum Brakes - 1-1/4" Bore

Master cylinder for Titan Model 10, 16, and 20 surge brake actuator with drum brakes - 1 1/4" bore - Complete assembly -...
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Price $8.79

TIT-44807
Titan - Model 60 Master Cylinder Cap - Diaphragm Style

Master cylinder cap for Titan Model 60 surge brake actuator - Diaphragm style - Black plastic - 1 1/4"-18 thread - Includes...
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Price $113.86

TIT-4820000
Titan - Master Cylinder for Titan Model 60 Surge Actuator w/ Disc Brakes

Master cylinder kit for Titan Model 60 surge brake actuator with disc brakes - Forged steel construction
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Price $9.94

TIT-4830601
Titan - Model 10, 16, & 20 Master Cylinder Cap - Diaphragm Style

Master cylinder cap for Titan Model 10, 16, and 20 surge brake actuators - Diaphragm style - Black plastic - Includes o-ring...
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Price $1.89

TIT-7745
Titan - Gasket for .015" Brake Orifice Fitting w/ 1/2" Thread

Copper gasket for use with early style brass orifice fitting for Titan Model 10, 16, and 20 surge brake actuators - For use...
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Price $1.05

TIT-7938
Titan - 5/16" Lock Washer

5/16" Lock washer for breakaway handle latch assembly & master cylinder bolt on Titan Model 10, 16, and 20 surge brake...
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Price $1.09

TIT-7949
Titan - 5/16" x 5/8" Hex Head Bolt

5/16"-18 NC x 5/8" Hex bolt for for breakaway handle latch assembly on Titan Model 20 surge brake actuator - Zinc plated -...
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Price $4.38

TIT-8291
Titan - Rear Roller

Steel rear roller for Titan Model 6, 10, 16, and 20 surge brake actuators
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Price $4.43

TIT-8301
Titan - Push Rod Block

Push rod block for Titan Model 10, 16, and 20 surge brake actuators - Zinc plated steel
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Price $38.45

TIT-8388
Titan - Right Master Cylinder Spring Bracket

Master cylinder spring bracket - Right side - For Titan Model 10, 16, and 20 surge brake actuators - Gray painted steel
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Price $38.45

TIT-8389
Titan - Left Master Cylinder Spring Bracket

Master cylinder spring bracket - Left side - For Titan Model 10, 16, and 20 surge brake actuators - Gray painted steel
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