Does Demco DM78CV Drum Brake Actuator Have Steel Or Plastic Housing?
Updated 08/15/2025 | Published 07/21/2025
Question:
Is the housing plastic? It looks like there’s a cover on the cylinder.
asked by: Camille
Expert Reply:
Camille, you’ve got a sharp eye! The Demco # DM78CV actuator body is all heavy-duty zinc-plated steel, but this version includes a plastic cover over the master cylinder and wiring for added protection. It’s especially handy for saltwater or muddy job sites.
Does your trailer have a welded or bolted on actuator? This one can do both, but I recommend bolting since it's easier and less trouble down the road if you need to replace it some day.
Product Page this Question was Asked From
Demco DA86 Brake Actuator for Disc Brakes w/ Lockout, Solenoid, and Cover - 2" Ball - 8,600 lbs
- Brake Actuator
- Surge Brake Actuator
- Boat Trailer
- Travel Trailer
- Utility Trailer
- Bolt-On
- 8600 lbs GTW
- 2 Inch Ball Coupler
- 3 Inch Channel Tongue
- Disc Brakes
- Manual Lockout
- Demco
more information >
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Andrew N.
8/15/2025
Hey Camille, did you decide to go with the actuator that has the plastic cover for your trailer? I'm curious to know if you found the bolting option as easy as suggested. Let me know how it worked out for you, as it could really help others in similar situations!