Description
This Dexter 3,500 lb trailer axle beam features straight spindles, an 89 in. hub-face specification, and a 74 in. spring-center measurement. Hubs, brakes, bearings, and leaf springs are not included.
Final Sale — Verify Fitment Before Ordering
Trailer axles cannot be returned or exchanged for incorrect measurements, incorrect selection, or change of mind. Confirm all specifications before purchasing. This restriction does not limit remedies required by law for damaged, defective, incorrect, or undelivered goods.
Specifications
- SKU: DEX50393771
- Axle Capacity: 3,500 lb
- Hub Face to Hub Face (HF): 89 in.
- Spring Center to Spring Center (SC): 74 in.
- Spindle Type: Straight
- Axle Tube Diameter: 2 ⅜ in.
- Lubrication System: E-Z Lube
- Manufacturer Part Number: 50393771
- Alternate Item Numbers: DT3584FZL0890074003
- Axle Model: D35
- Axle Tube Shape: Round
- Beam Finish: Painted
- Camber: No
Included Components
- One Dexter Axle Beam With Spindles
- Spring Seats at the Listed Spring-Center Measurement
Installation Required
This is an axle beam, not a complete hub or brake assembly. Compatible hubs, bearings, seals, suspension components, and any required brakes must be selected and installed separately. Proper mounting and installation checks are required before use.
Verify Fitment Before Ordering
Confirm the following specifications match your trailer’s requirements:
- Hub Face to Hub Face (HF): 89 in. (Nominal Specification for Compatible Hubs)
- Spring Center to Spring Center (SC): 74 in. (Measured Between the Centerlines of the Spring Seats)
- Spindle Type: Straight
- Axle Capacity: 3,500 lb
Trailer make, model, or axle capacity alone does not establish fitment. Verify all dimensions and the suspension configuration before purchasing.
How to Measure a Straight Sprung Trailer Axle

Questions or Order Support
For help verifying specifications before ordering, or to report an issue with your order, contact parts@prolinetrailersales.com or call (540) 334-4182, Ext. 2 for Parts.
Have your axle identification tag and measurements available for fitment assistance, or your order number available for order support.


