
#42 Trailer Spindle — 2.25" Flanged • Pre-Bolted • Fits Many 7,000 lb Axles
Part Number: SP-22542FZ-KIT
This #42 weld-on trailer spindle is commonly used on 7,000 lb axles and includes the pre-installed brake flange bolts plus nut, washer, and cotter pin. Suitable for axle builds, repairs, and heavy-duty applications requiring a flanged 2.25" spindle. Bearings, races, and seals are not included.
Features
- Fits many 7,000 lb trailer axles
- 2.25" weld end diameter
- Pre-bolted brake flange (5-bolt pattern)
- Standard 1" spindle threads
- Flanged spindle design for brake backing plates
- Includes washer, castle nut, and cotter pin
What’s Included
- 1 × 2.25" Non-Lubed Spindle (for 7K axles)
- 1 × Round Washer (SW1000)
- 1 × Castle Nut (006-001-00)
- 1 × Cotter Pin (165649)
Specifications
| Part Number | SP-22542FZ-KIT |
| Axle Rating | Common on 7,000 lb axles |
| Weld End Diameter | 2.25" |
| Outer Bearing | 14125A (1.25") — not included |
| Inner Bearing | 25580 (1.75") — not included |
| Seal Size | 2.25" ID (10-36 style) — not included |
| Thread Size | 1" |
| Brake Flange Pattern | 5-bolt (pre-installed bolts require 3/8" nuts) |
| Bolt Spacing | Approx. 2-1/8" between each bolt |
Additional Notes
This spindle is designed for grease-lubricated hubs only and is not suitable for oil-bath hub systems. Verify seal and bearing sizes before installation.
Fitment Notes
Typically used on Dexter-style 7K axles and similar AL-KO or Axis configurations. Always confirm measurements on your existing axle or hub system before ordering.