Match the part number, measurements and connection points that apply to your trailer.
| Hub Face | Measure hub face to hub face. |
|---|---|
| Spring Center | Measure mounting centers and confirm perch configuration. |
| Capacity | Match the required axle rating. |
| Brakes | Confirm brake type and flange configuration. |
Aftermarket left-hand hydraulic free-backing brake assembly for 3,500 lb trailer axle applications using a 10" x 2.25" brake size and 4-bolt mounting pattern.
The AKFBBRK-35L is an aftermarket hydraulic trailer brake assembly for the left-hand side of compatible 3,500 lb axle applications. It uses a 10" x 2.25" brake size, 4-bolt mounting pattern, and free-backing design for hydraulic surge brake systems where reverse operation requires backing relief.
When replacing hydraulic trailer brakes, match the brake size, side orientation, mounting bolt pattern, and axle rating before ordering.
Compatibility: Designed for compatible 3,500 lb trailer axle applications using 10" x 2.25" hydraulic brakes with a 4-bolt mount.
Vehicle / System Fit: Hydraulic surge brake trailer systems where a free-backing left-hand assembly is required.
Installation Notes: Match the left-hand orientation, brake size, mounting pattern, and axle rating before ordering.
Performance Insight: Free-backing hydraulic brakes are designed to help the trailer back up more smoothly in compatible surge brake applications.
Selling Brand: Aftermarket replacement brake assembly.
Application Reference: Any axle or trailer references in this listing describe compatibility targets only where the brake size, mounting pattern, side orientation, and axle rating match.
What This Means: This listing is for one aftermarket hydraulic free-backing brake assembly, not a verified OEM-branded item unless separately stated.
Before Ordering: Verify brake size, left/right orientation, 4-bolt mounting pattern, axle rating, and hydraulic brake system type.
A left-hand brake assembly should be replaced with the correct side-specific assembly. Installing the wrong side can affect braking operation and adjustment.
Built for compatible hydraulic surge brake systems where free-backing operation is required.
Side-specific left-hand brake assembly for proper trailer brake replacement and service work.
Matches common 3,500 lb trailer axle brake applications using a 10" x 2.25" brake configuration.
Designed for compatible axle brake flanges using a 4-bolt mounting pattern.
| Specification | Detail |
|---|---|
| Part Number | AKFBBRK-35L |
| Brand | Aftermarket |
| Product Type | Hydraulic trailer brake assembly |
| Brake Style | Uni-servo free backing |
| Side | Left hand |
| Brake Size | 10" x 2.25" |
| Mounting Pattern | 4-bolt |
| Axle Application | For compatible 3,500 lb trailer axles |
| Category | Details |
|---|---|
| Trailer System | Hydraulic surge brake trailer applications |
| Primary Fit | 3,500 lb axle applications using 10" x 2.25" hydraulic brakes |
| Orientation | Left-hand brake assembly only |
| Notes | Verify side, brake size, mounting flange, and hydraulic free-backing configuration before ordering. |
| Quantity | Item |
|---|---|
| 1 | Left-hand hydraulic free-backing brake assembly |
| 1 | 10" x 2.25" backing plate assembly |
| Included as assembled | Brake shoe and internal brake assembly components |
| Not specified | Additional mounting hardware not confirmed in provided listing details |
Selected from R&P customer feedback for Trailer Axle / Running Gear products and related trailer service.
“Got me the axle I needed right away with custom spring perch setting.”
“Had a trailer made to my needs.ken was able to get it done and at a price that was very acceptable.i have bought parts there for 2 other trailers and always in stock”
“Quality work. Staff is polite. Great job welding a project for me. Didn't even want to charge me, so I bought them a case of Corona. They were ecstatic. I ever need a welding or like that R&P Carriages is #1 !!!!!”
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