Replacement 3,500 lb Hubs & Hydraulic Brakes For 2003 EZ Loader Boat Trailer
Updated 02/03/2026 | Published 07/05/2024 >
Products Featured in This Question
Question:
I am contacting you to inquire about parts for an 2003 EZ Loader boat trailer. I would like to know if you have a cross reference for the following parts: • 300-031803 HUB DRUM KIT 5 LUG 10 GREASE w/BEARING PROTECTOR • 250-015781 BACKING PLATE 10 HYD., LEFT • 250-015782 BACKING PLATE 10 HYD., RIGHT • 300-031807 Hub Kit 5-Lug Grease w/Bearing Protect. H1000 • 300-033610 Flush Kit Drum Brake 1 Kit per Axle Thank you for your time and assistance. Sincerely, Steve C
asked by: Steve C
Expert Reply:
Hi Steve,
I was able to do some research and find all the parts you need; they don't all come in a kit though you can get the parts individually with the following:
- Trailer Hub and Drum Assembly # AKHD-545-35-G-K
- Trailer Idler Hub Assembly # AKIHUB-545-35-G-K
- Bearing Buddy Bearing Protectors # BB1980A
- Hydraulic Brake Kit # AKFBBRK-35-D & Mounting Hardware # BRKH10B
A couple of things to note, one of which is the Bearing Buddies are sold in a pair and not individually, so keep that in mind for the Quantity when you check out. And while we don't have the exact Flush Kit you mentioned, we do have a similar option to bleed your brakes, the Powerbuilt Brake Bleeder - Master Kit # ALL648591.
Product Page this Question was Asked From
Bearing Buddy Bearing Protectors - Model 1980A w/ Auto Check - Chrome Plated (Pair)
- Trailer Bearings Races Seals Caps
- Caps
- Bearing Protector Grease Cap
- 1.99 Inch
- 2000 lbs Axle
- 2500 lbs Axle
- 3500 lbs Axle
- Bearing Buddy
more information >
Continue Researching
- Shop: Karrier ST175/80R13 Radial Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range D
- Shop: CE Smith Trailer Idler Hub Assembly w/ Case for 3.5K Axles - 5 on 4-1/2 - Galvanized - Pre-Greased
- Shop: Karrier ST175/80R13 Radial Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range C
- Shop: Dexstar Steel Directional Trailer Wheel - 13" x 4-1/2" Rim - 5 on 4-1/2 - Silver
- Shop: Hydraulic Brake Kit - Uni-Servo - Free Backing - Dacromet - 10" - Left/Right Hand - 3,500 lbs
- Shop: Provider ST175/80R13 Radial Trailer Tire - Load Range C
- Shop: Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel - 5 on 4-1/2 - Load Range D
- Search Results: tie down brakes
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Search Results: 1750 axle
- Q&A: Converting Boat Trailer From Rollers to Bunk Boards
- Search Results: bunk boards boat trailer parts
- Video: The Low-Down on the CE Smith Carpeted Bunk Boards for Boat Trailers
- Video: CE Smith Bolster and Swivel Bracket Assemblies Feature Review
- Video: Feature Breakdown: CE Smith U-Bolts
- Article: Most Popular Wheel Bearings
- Article: Replacing the Bearing, Races and Seals on a Trailer Hub
- Q&A: How To Tell What Size Bearing Buddy Is Needed for My Trailer Hubs
- Q&A: Availability of a Trailer Coupler that Fits a 3-1/2 Inch Wide Tongue
- Q&A: Difference Between Bearing Buddy 1980 Models
- Q&A: Recommendations For Replacing A 1-1/2 Inch Grease Cap?
- Q&A: Should Bearing Buddies Buddies be Used on EZ Lube Trailer Axles
- Q&A: Standard Color Code for Wiring Simple 4 Wire Trailer Lighting
- Article: Trailer Maintenance Schedule
- Article: Trailer Tire Sizing
- Article: How to Tell the Weight Rating of a Trailer Axle
- Article: Where to Position the Trailer Axle?


Chris R.
2/3/2026
Hey Steve, did the hub and brake parts you picked out for your EZ Loader trailer fit the way you needed? Your update could make it easier for the next person trying to match those same components.