Match the part number, measurements and connection points that apply to your trailer.
| Part Number | Match the number stamped on the original bearing or seal. |
|---|---|
| Dimensions | Measure the mating surfaces when a number is unavailable. |
| Hub / Axle | Use capacity as context, not as the only fitment check. |
Part Number: SP-150BT8-SQ-KIT
This 2,000 lb square trailer spindle is designed for light-duty axle builds and replacement applications. The spindle features a 1.50" square weld end, precision machined bearing surfaces, and fits standard L44643 bearings with the matching T-23970 (1.249") grease seal. This kit includes the spindle plus the correct castle nut, washer, and cotter pin for installation.
| Specification | Detail |
|---|---|
| Spindle Style | Square weld end |
| Weld End Size | 1.50" square |
| Bearing Size | L44643 (1.00" ID) inner & outer |
| Seal Size | T-23970 / 1.249" ID grease seal |
| Spindle Length | Approx. 3.32" |
| Weight | 0.23 lb |
| Included Hardware | 1× FA-SN100 Castle Nut (1") 1× SW1000 Spindle Washer (1") 1× 165649 Cotter Pin (1/8" × 1-3/4") |
This spindle fits 2,000 lb light-duty hubs that use L44643 bearings and a 1.249" ID grease seal. Always confirm your bearing numbers and seal size before ordering.
