At a Glance
- SKU: 13-139-03-PAIR
PRODUCT INFORMATION
Product Details
Trailer Suspension / Slipper Spring Equalizer Service
13-139 Equalizer Pair for 10K GD Slipper Spring Trailer Suspension
SKU: 13-139-03-PAIR
Pair of trailer suspension equalizers stamped 13-139. Fits left-hand or right-hand service on compatible 10K GD slipper spring suspension applications using 38" axle spacing and 2.5" slipper springs.
Quantity 2 — Equalizer Pair 13-139 Stamped Equalizers Dexter 013-139-03 Style Reference 38" Axle Spacing Reference
Compact Specs
| 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 |
Measurement Guide 
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.
Measurement diagram for 13-139 / 013-139-03 style slipper spring equalizer.
Supplier Measurement Table
| 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 |
Measurement Note: This equalizer is measurement-sensitive. Supplier reference data can display formatting differences, so always compare the actual part, diagram labels, and physical measurements before installation.
Overview
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.
R&P Service Insight
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.
R&P Knowledge Hub
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.
Features
Pair of Matching Equalizers
Listing includes two equalizers for side-to-side service on compatible tandem-axle trailer suspension setups.
13-139 Stamped Reference
Use the stamped number as one of the main comparison points when matching your original suspension equalizers.
Dexter 013-139-03 Style Reference
Cross-reference information is included to help compare supplier and original part data before ordering.
Built for Slipper Spring Suspension Service
Intended for compatible 10K GD slipper spring suspension applications where measurements and layout match.
Included Components
| 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. |
Related Hardware To Check
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 |
This is a measurement-sensitive trailer suspension component. Verify stamped number, part number reference, axle spacing, spring width, hole sizes, inside diameter, hanger setup, suspension layout, and included components before installation. OEM or manufacturer names are used for part-matching reference only unless the product is specifically identified as OEM and verified.
Shop Related Suspension Parts
Need matching bolts, nuts, hangers, bushings, or trailer suspension components? Search our site for related equalizer and slipper spring suspension parts.
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Related Parts & Kits
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BEHIND THIS LISTING
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