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. |
Pair of Dexter Nev-R-Adjust electric brake backing plate assemblies for compatible 4,400 lb trailer axle applications using a newer special 4 bolt flange. Includes one left-hand assembly, one right-hand assembly, mounting nuts, adjuster plugs, and instruction sheet.
Compatibility: Intended for compatible 4,400 lb trailer axle applications using 10 inch x 2-1/4 inch electric brake assemblies, a newer special 4 bolt flange, and Dexter drum casting numbers 8-407 or 8-498 where all mounting details match.
Vehicle / System Fit: Trailer electric brake system for one axle position requiring a left and right brake assembly pair.
Installation Notes: Verify flange dimensions, drum reference, mounting stud spacing, and brake size before ordering. This kit includes pressed-in bolts, mounting nuts, adjuster plugs, and an instruction sheet.
Performance Insight: Installing a matched pair helps keep braking more even from side to side, while the self-adjusting design supports more consistent shoe-to-drum adjustment in regular trailer use.
Selling Brand: Dexter
Application Reference: Any OEM or platform names in this listing describe compatibility, fitment target, or application style only where supported by verified dimensions, mounting points, and configuration details.
What This Means: This listing is for a Dexter pair of Nev-R-Adjust electric brake backing plate assemblies, not a guaranteed fit for every 4,400 lb trailer axle unless brake size, flange layout, drum reference, and mounting measurements match your current setup.
Before Ordering: Verify measurements, mounting style, orientation, connector style, axle/brake/hub specifications, wheel clearance, and included components before installation.
Includes one left-hand and one right-hand backing plate assembly for a complete axle set.
Self-adjusting brake design helps maintain more consistent brake shoe adjustment during normal use.
Designed for applications using the special newer 4 bolt mounting flange shown by the provided measurements.
Includes mounting nuts, adjuster plugs, and an instruction sheet, with bolts already pressed into the assemblies.
| Specification | Detail |
|---|---|
| Part Number | K23-478-479 |
| Brand | Dexter |
| Product Type | Pair of Nev-R-Adjust electric brake backing plate assemblies |
| Application | Trailer axle electric brake system |
| Material / Finish | Not specified |
| Key Measurement | 10" diameter x 2-1/4" wide |
| Fitment | Compatible 4,400 lb trailer axle applications with newer special 4 bolt flange |
| Adjustment Type | Nev-R-Adjust / self-adjusting |
| Drum Reference | Fits Dexter drum casting number 8-407 or 8-498 |
| Category | Details |
|---|---|
| Vehicle / System | Trailer electric brake system |
| Primary Fit | 4,400 lb trailer axles using 10" x 2-1/4" self-adjusting electric brake assemblies with newer special 4 bolt flange |
| Secondary Fit | Applications using Dexter drum casting number 8-407 or 8-498 and 13", 14", 15", or 16" wheels with 6 on 5.5 bolt pattern where clearance and configuration match |
| Notes | Verify flange measurements before ordering: top stud to opposite top stud 2-7/8", top stud to bottom stud 3", and bottom stud to opposite stud 3-1/4". |
| Quantity | Item |
|---|---|
| 1 | Left backing plate assembly |
| 1 | Right backing plate assembly |
| 1 | Instruction sheet |
| 8 | Mounting nuts |
| 4 | Adjuster plugs |
