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Demco Hydraulic Drum Brake Assembly - Single Servo - Galvanized - 10" - Left Hand - 3,500 lbs
(37 reviews)
Price: $76.75
In Stock
Demco Hydraulic Drum Brake Assembly - Single Servo - Galvanized - 10" - Left Hand - 3,500 lbs
Item # 18788
Our Price: $76.75
This item qualifies for Free Shipping
In Stock
- All Info
- Reviews (37)
- Q & A (7)
- Photos
- Why etrailer?
Demco Accessories and Parts - 18788
- Trailer Brakes
- Hydraulic Drum Brakes
- Demco
- Brake Assembly
- 10 x 2-1/4 Inch Drum
- LH
- Single Servo
- 3500 lbs
Driver's-side hydraulic trailer brake assembly features a single-plunger design. Galvanized steel resists rust, making the assembly great for boat trailers. Mounting flange has 4-bolt pattern.
Features:
- Marine-grade hydraulic drum brake assembly is great for boat trailers
- Designed for use with surge-type trailer brake actuators
- Sturdy, corrosion-resistant steel construction
- Galvanized backing plate
- Stainless steel spring hardware
- Zinc-plated wheel cylinder
- Single-plunger design delivers 15 - 20 percent braking in reverse
- Riveted brake shoes provide increased durability
- Periodic manual adjustment required
- Mounting bolts sold separately
- Made in the USA
Specs:
- Configuration: left hand (driver's side)
- Dimensions: 10" diameter x 2-1/4" thick
- Mounting flange bolt pattern: 4 on 4"
- Wheel size: 13" - 15"
- Axle rating: up to 3,500 lbs
- 1-Year warranty
SB18788M Demco Galvanized 10" Marine Trailer Brake Assembly - Single Servo - Left Hand
California residents: click here
Customer Reviews
Demco Hydraulic Drum Brake Assembly - Single Servo - Galvanized - 10" - Left Hand - 3,500 lbs - 18788
Average Customer Rating: 4.9 out of 5 stars (37 Customer Reviews)
Driver's-side hydraulic trailer brake assembly features a single-plunger design. Galvanized steel resists rust, making the assembly great for boat trailers. Mounting flange has 4-bolt pattern.
- 18788
John - 09/08/2019
60943
by: John09/08/2018
Afternoon job for both left and right side of 2000 Jayco pop up camper. Cheaper and easier than break job. Fast shipping. 563046
Comments
It’s been about a year now and 5 or 6 trips up north to camp. Have a boat trailer that I will use this product on yet this fall.
John - 09/08/201960943
- 18788
by: Mark05/13/2018
Put new brakes, drums, bearings and seals and hubs on boat trailer found all parts here and received really fast always order parts for trailers here and always will 508364
- 18788
by: Gary05/05/2018
Great products at great prices! 504802
- 18788
by: Fred B.09/15/2017
Like the assembly being galvanized to last longer and already assembled. Being labeled for left and right is a nice added touch, but not necessary with single piston cylinders. I added a flush kit to my trailer and had to drill a hole through the plate to add, not a problem. 432696
- 18788
by: Robert K.06/09/2017
So happy i found etrailer. They had the quality parts i had been looking for at a great price. I am equally happy with the speedy free shipping. I recieved the brake assemblies and installed them in less time than it took to locate them. Thank you. You will be my go to trailer parts supplier for all future parts. I have 5 different trailers and am sure i will require your services. Robert K. 390839
- 18788
by: jim f02/09/2017
Very simple to install. Unbolted old and installed new and adjusted. So easy even a caveman could do it. 340229
- 18788
by: Mathew W.01/08/2017
When I realized my brakes were in need of repair and no local shop worked on trailer brakes I decided to do it myself. With the help of the etrailer folks I had a new set of brakes and was ready for another fishing season. Great products, they do what they say and great customer support. 333472
- 18788
by: Tom in California10/25/2016
These worked great. Much easier to replace the whole assembly like this, than replacing all of the original rusted out components. These are galvanized, so they should last a long time. I'm using these for a boat trailer for a 21 foot fiberglass euro styled V8 powered pleasure boat that weighs about 3000 pounds. 313288
- 18788
by: Chip08/04/2016
Perfect fit. Bolt on and go?? 279696
- 18788
by: bill03/31/2016
brakes hubs and bearings arrived very fast.all parts fit perfect.sales person was excellent in helping me with the boat trailer parts.thank you 242571
- 18788
by: Tom07/31/2015
Great products. Easy cross referencing from old to new replacement. Great info video. 215799
- 18788
by: Kurt W.06/14/2014
Easy to install and fast shipping. 135602
- 18788
by: Jimm H07/22/2013
Nice quality product. Easy to install... Well, as easy as any brake job could be. Spend a little bit and buy new bolts when you do this job. 90848
- 18788
by: Robert02/20/2013
Works well. 67121
- 18788
by: jack w.09/26/2012
Great product and fit perfect Great service and will order again! 55852
- 18788
by: pat splat05/29/2012
"great product low price" quote is valid. bolted right up. Note: I have a boat, and the only thing missing on the backing plate is the half inch hole for my water flush out that was on my old ones, had to drill one next to the flange mount. I packed a little extra grease in the calipers too. 41921
- 18788
by: BJ R04/25/2012
Perfect fit. Works great. I wish I had known it didn't come with nuts and bolts. Other than that it was perfect. 38407
- 18788
by: TBird10/27/2011
At my door today quick ship great communication have not installed yet but don't anticipate any issuses 26222
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by: Tyler08/29/2019
Review from a similar Demco Galv Single Servo 10 Inch in Accessories and Parts
Everything as expected. 695251
- 18787
by: George06/08/2019
Review from a similar Demco Galv Single Servo 10 Inch in Accessories and Parts
I have great service with Etrailer. Ordered the wrong part,called and was completely taken care of. Easy to do business with. 655246
- 18787
by: Mark05/13/2018
Review from a similar Demco Galv Single Servo 10 Inch in Accessories and Parts
Put new brakes,drums, bearings and seals and hubs on boat trailer found all parts here and received really fast always order parts for trailers here and always will 508367
- 18787
by: Gary05/05/2018
Review from a similar Demco Galv Single Servo 10 Inch in Accessories and Parts
Great products at great prices! 505241
- 18787
by: Kristopher04/17/2018
Review from a similar Demco Galv Single Servo 10 Inch in Accessories and Parts
Parts arrived exactly as described and worked perfectly. Great price, shipping was fast considering how far it had to come and arrived when it said it would. I've already ordered more parts from here and will continue to in the future. 497330
- 18787
by: Robert K.06/09/2017
Review from a similar Demco Galv Single Servo 10 Inch in Accessories and Parts
So happy i found etrailer. They had the quality parts i had been looking for at a great price. I am equally happy with the speedy free shipping. I recieved the brake assemblies and installed them in less time than it took to locate them. Thank you. You will be my go to trailer parts supplier for all future parts. I have 5 different trailers and am sure i will require your services. Robert K. 390840
- 18787
by: jim f02/09/2017
Review from a similar Demco Galv Single Servo 10 Inch in Accessories and Parts
Very simple to install. Unbolted old and installed new and adjusted. So easy even a caveman could do it. 342415
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Show More Reviews
Ask the Experts about this Demco Accessories and Parts
- Recommendation for Installation of a Brake Mounting Flange on a Trailer Spindle and AxleWelding a mounting flange, possible item # 4-35, is a very precise installation. The flanges need to be installed square and concentric to the hub and drum assembly and each other. If the flange is installed incorrectly rapid brake lining wear, improper braking, trailer dog legging, bearing failure, rapid tire wear and, worst of all, weakening of the axle can occur. Usually special jigs are used to install the flange. The jig will keep the flange square and concentric to the axle and...
view full answer... - Bolt Pattern Size on Galvanized Marine Brake Assembly 18787The backing plate bolt pattern is 2-7/8 inches on center both ways (square). If we can help further let us know.
view full answer... - Will Demco Hydraulic Drum Brake Assembly Fit Trailer Axle with 10 inch Hub/DrumsAs long as you match up the bolt pattern of the brake assembly you have to the mounting flange of your trailer they will bolt right up. This is typically very easy since nearly all axles use the same 4 and 5 bolt mounting flanges. If your mounting flange has a 4 bolt pattern the part # 18788 that you referenced would bolt right up.
view full answer... - I Want to Replace All of the Surge Brake Equipment on a 2002 Performance Boat TrailerThe surge brake equipment of your trailer consists of the brake lines, drum brakes and the brake actuator. To ensure I recommend the correct parts for your trailer I will need a little more information. A brake line kit is pretty universal. For a single axle trailer, I recommend using part # T4829900. This kit comes with all of the lines and fittings you will need to replace everything from the actuator to the brake assemblies. For an actuator, I would need to know what type of...
view full answer... - Boat Trailer Brake Assembly Recommendation for a 3500 UFP AxlesYes, the Demco Hydraulic Drum Brake Assembly # 18787 would be the correct assembly for the right hand side of your trailer and the part # 18788 would be the correct assembly for the left hand side of the trailer. If your current brake assemblies only have a 1-3/4 inch width they are not fully utilizing the 2-1/2 inches of drum width that you measured. The bolt pattern of the flange is also the same as what you have. Check out the picture I attached to see these measurements. These...
view full answer...![]()
- How To Check if Trailer Surge Brakes Are Working Properly On Tandem Axle Boat TrailerChecking the brakes can be done in two ways. The easiest way is to raise one side of the trailer and spin the wheels while someone applies the surge brakes at the coupler. The better way would be to remove each of the wheels and brake drums and activate the brakes while making sure the wheel cylinders and brake assemblies are functioning properly. After this the first thing I would do is bleed the brakes using the trailers surge coupler to force the fluid from the brake lines and make...
view full answer... - Drum and Hub Kit, Wheel, and Brake Assembly Recommendation for a 2009 Starcraft 2106I did some research and found that all of the hub and drum assemblies that would fit on your spindle would be 10 inches in diameter, and I also found that if you have a 10 drum you have to have at least a 13 inch rim, so you would need to upgrade to bigger wheels and tires also. The Trailer Hub & Drum Assembly, part # 84546UC3-EZ, that you referenced is the correct hub and drum assembly. For brake assemblies I would recommend a Galvanized 10 inch Marine Brake Assembly, part # 18788,...
view full answer...
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Info for this part was:
Expert Research:
Robert G
Expert Research:
Jameson C
Updated by:
Laura H
Updated by:
Sarah W
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