Parts Needed To Add Electric Brakes To Boat Trailer With Hydraulic Brake System
Updated 10/30/2025 | Published 10/10/2025
Question:
I have a 20 boat trailer with hydraulic brake system. Do you sell a kit to convert it to electric brake system. Thank You
asked by: Gerald B
Expert Reply:
Hello Gerald, thanks for reaching out. We do have parts for converting a trailer to electric brakes, but it is not something we carry as a full kit. I am happy to provide a list of parts for you, but first I will need more information.
First, does your trailer currently have hydraulic disc brakes, or are they drum brakes?
Next, I will need to know your axle information. Specifically the weight capacity of your axle, and your bearing/seal information. If you have drum brakes currently, I should be able to use the casting number on your hub to look that up.
Depending what you have, you may be able to use the current hub, drums, or you may need a complete disc brake kit.
Let me know what kind of brakes you have now, as well as that axle/bearing info and I am happy to look into it and recommend parts.
Take a look at the articles I linked. They go over the process of adding electric brakes to a trailer.
Product Page this Question was Asked From
etrailer Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K
- Trailer Brakes
- Electric Drum Brakes
- Standard Grade
- Self Adjust
- 10 x 2-1/4 Inch Drum
- 3500 lbs Axle
- 13 Inch Wheel
- 14 Inch Wheel
- 15 Inch Wheel
- etrailer
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Article: Trailer Wiring Diagrams
- Article: Parts Needed to Add Electric Drum Brakes to a Trailer
- Article: Electric Trailer Brakes: How They Work & What to Buy
- Q&A: Comparing the eTrailer and Dexter Electric Trailer Brake Kits
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Q&A: Parts Needed to Add Brakes to Ranger Boat Trailer
- Q&A: What is a #84 Spindle and How Do I Know I Have One On My Trailer?
- Q&A: Suspension Enhancement Recommendation for Trailer with Dexter 2,000 lb Axles
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Most Popular Wheel Bearings
- Q&A: What Size Wet Bolts Come with MORryde Suspension Upgrade Kit # MR46ZR
- Q&A: Instructions to Wire a Trailer for Electric Brakes
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Difference Between Dexter and etrailer Hub/Drum Assembly for 3,500 lb Axles
Jesse M.
10/30/2025
Hey Gerald, did you get a chance to check whether your trailer has disc or drum brakes and gather the axle and bearing details? Once you have that info, I can help narrow down the right parts for your electric brake conversion. Let me know what you find so we can move forward.