At a Glance
- > (2) SP-150BT16FZ Flanged Stub Spindles
- >2,000 lb rated
- >Round end
- >1.50" × 3.37"
- >Flanged and pre-lubed
- Brand: Need a Trailer Part
- SKU: BYOAK-440BT16FZ-KITX2
Before You Order
Match the part number, measurements and connection points that apply to your trailer.
Fitment Check
| Bearings | Match inner and outer bearing numbers. |
|---|---|
| Seal | Match the seal number or dimensions. |
| Bolt Pattern | Verify the complete lug pattern. |
| Brake Size | Confirm when applicable. |
Product Details
Build Your Axle Stub Kit – 2,000 lb Capacity
4 on 4" Idler Hubs • Flanged Stub Spindles • Complete Hardware Set
Part Number: BYOAK-440BT16FZ-KITX2
Need to replace the stub spindle assemblies on a 2,000 lb trailer axle? This complete axle stub kit includes everything required to replace both sides of the axle — from flanged spindles to bearings, seals, hubs, and hardware.
Ideal for utility trailers, small cargo trailers, and light-duty applications.
Axle & Spindle Specifications
| Specification | Detail |
|---|---|
| Axle Rating | 2,000 lb (1,000 lb per side) |
| Bolt Pattern | 4 on 4" |
| Spindle Type | Flanged Stub Spindle |
| Spindle Dimensions | 1.50" × 3.37" |
| Bearing Type | L44649 (1.0625" ID) |
| Seal Size | 10-60 (1.50" × 1.98") |
What’s Included (Complete Kit for Both Sides)
-
(2) SP-150BT16FZ Flanged Stub Spindles
- 2,000 lb rated
- Round end
- 1.50" × 3.37"
- Flanged and pre-lubed
- Fits L44649 bearings
- Fits 10-60 grease seal
-
(2) 88440-1 Idler Hubs
- 2,000 lb capacity
- 4 on 4" bolt pattern
- 1/2" wheel studs
- Cupped & studded
-
(8) L44649 Bearings
- 1.0625" inside diameter
- Fits L44610 race
-
(2) 10-60 Grease Seals
- 1.50" × 1.98"
-
(2) FA-SN100 Castle Nuts
- 1" thread
-
(2) SW1000 Round Washers
- 1"
-
(2) Cotter Pins (165649)
- 1/8" × 1-3/4"
-
(2) DC-200L Dust Caps
- 1.98"
- Rubber insert
Important Notes
- This kit replaces both axle ends (left and right)
- Professional installation recommended
- Verify axle rating and bolt pattern before ordering