| Listing Quantity | 2 Equalizers / Pair |
| R&P SKU | 13-139-03-PAIR |
| Stamped Number | 13-139 |
| Reference Numbers | Dexter 013-139-03 / 01313903 / 220-01313903 |
| Product Type | Trailer suspension equalizer pair |
| Suspension Reference | 10K GD slipper spring suspension |
| Spring Style | 2.5" slipper springs |
| Axle Spacing Reference | 38" axle spacing |
| Type | Left Hand / Right Hand |
Use the diagram and table below to compare this equalizer against your original suspension part. Match the stamped number, axle spacing, hole sizes, inside diameter, spring style, and suspension layout before ordering.
| Axle Spacing | 38" |
| Dimension A | 14-1/4" |
| Dimension B | 1-3/8" |
| Hole Size C | 1" |
| Hole Size D | 3/4" |
| I.D. | 2-3/4" |
| Type | Left Hand / Right Hand |
| Mfg. Part # | 013-139-03 |
| Reference | 08527-5 / 085275 |
This listing includes two matching 13-139 trailer suspension equalizers for compatible tandem-axle slipper spring suspension service. Equalizers help the suspension articulate between the front and rear springs as the trailer moves over uneven roads, driveways, jobsite terrain, and loading areas.
Equalizers are load-sharing suspension parts. When they wear, bend, crack, or no longer pivot correctly, the trailer can ride rough, wear tires unevenly, or place added stress on springs, hangers, and hardware.
- Pair Replacement: This listing includes two equalizers for matched side-to-side suspension service.
- Measurement Match: Stamped number alone is helpful, but dimensions and suspension layout still need to match.
- Hardware Check: Inspect bolts, nuts, bushings, hangers, spring eyes, and wear points during installation.
Compatibility: Reference data for this equalizer family identifies Dexter 013-139-03 / 01313903 style 10K GD equalizer applications with 38" axle spacing and 2.5" slipper springs.
Vehicle / System Fit: Tandem-axle trailer slipper spring suspension where the original equalizer matches this style, stamped number, and measurement set.
Installation Notes: Confirm axle spacing, spring width, hole sizes, hanger setup, center pivot layout, inside diameter, and suspension geometry before installation.
Performance Insight: A correctly matched equalizer supports suspension articulation and helps distribute movement between the front and rear springs in a tandem-axle setup.
Listing includes two equalizers for side-to-side service on compatible tandem-axle trailer suspension setups.
Use the stamped number as one of the main comparison points when matching your original suspension equalizers.
Cross-reference information is included to help compare supplier and original part data before ordering.
Intended for compatible 10K GD slipper spring suspension applications where measurements and layout match.
| Quantity | 2 |
| Item | 13-139 trailer suspension equalizers |
| Not Included | Bolts, nuts, bushings, shackle straps, center hangers, spring eye hardware, leaf springs, and installation hardware unless shown or specifically stated. |
The following Dexter hardware references are commonly associated with this equalizer family, but they are not included in this listing:
| Dexter 006-112-00 | Lock nut, 1"-8, Grade B |
| Dexter 006-113-00 | Lock nut, 3/4"-10 thread |
| Dexter 007-264-00 | 3/4"-10 x 4-1/2" bolt for 10K GD spring eyes |
| Dexter 007-169-00 | Equalizer / spring eye bolt, 1"-8 x 5-1/2" |
| Dexter 029-042-02 | 10K GD center hanger for equalizer |
