Replacement Master Cylinder w/ Bypass Electric Lockout for Demco Actuators - Disc Brakes

Looks like a quality part Fit exactly where the old one came out 800527

by: Dustin04/27/2020

In less than one year the reverse solenoid went out. I saw in another review this same issue happened. My solenoid was wired directly to the vehicle ground supply and is getting 14.3 volts. 786867

by: 71roadrunner12/20/2019

The initial product had a problem with the solenoid after about 6 months after installation. The solenoid did not respond to the 12V reverse signal. Although customer service could not replace the total unit, they were able to have the vendor send a replacement solenoid at their expense. The solenoid showed up later than promised, however, it did respond to the 12V signal. The unit now works. I now see that the solenoid can now be purchased individually. Thanks for the opportunity to share this review and I appreciate customer service helping to resolve this issue. 733541

Your company did what it said it would, in a very timely time..The lights were as I needed, would buy from you again.. The brake cylinder also fits my trailer and the price was right. 715316

by: Chris06/20/2019

Still working great after 1 year ! 660531

Master cylinder fit perfectly. Great customer service. Thanks. 606616

by: Tim11/06/2018

the solenoid failed I need to replace a gain. 580581

I spoke with my contact in the Tech Support department at Demco, who tells me its pretty rare for those solenoids to fail after only one year. What is much more likely is that the solenoid is not getting sufficient power, or the ground connection isnt secure enough. Instead of grounding the solenoid to the trailer frame, tie it into the ground for the trailer connector which will ensure a good ground connection. Youll also want to check the solenoid power feed and make sure youre getting a full 12-volts. If its not a wiring issue and the solenoid needs replacing, we carry a replacement as part # DM5404
Demco Solenoid Kit for Brake Actuators with Reverse Lockouts - Bypass
$51.63.

-- Mike L - 11/07/2018

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Needed a new master cylinder for my boat trailer. They had it in stock and shipping was fast. Will definitely use ETRALIER in the future. 543586

This product will help when backing up the trailer. Replaced original perfectly. 482569

Excellent Product and price,fit perfect,thanks for your speedy service. 350678

Product worked just find!

JohnK - 03/11/2018

Part fit perfect!!!!! 295899