Two (2) 5x4.5 Replacement Idler Hub Spindle Kit Stub End Trailer Axle 3500# #84
Two-side idler stub axle assembly kit for compatible trailer repair and fabrication work using 5 on 4.5 idler hubs, #84 round non-flanged spindles, L44649 / L68149 bearing kits, and matching spindle hardware.
Specifications
| Specification | Detail |
|---|---|
| Part Number | STUB-84-545-H-X2 |
| Brand | R&P Carriages |
| Product Type | Pair of idler stub axle assembly kits |
| Hub Type | Idler hub, 3500 lb style |
| Hub Bolt Pattern | 5 on 4.5" |
| Wheel Stud / Lug Nut Size | 1/2-20 |
| Spindle Type | #84 round spindle, non-flanged |
| Spindle Tail Size | 2" x 3.37" |
| Bearing Reference | L44649 / L68149 bearing kit reference |
| Brake Flange | Not included / non-flanged spindle |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / System | Trailer idler hub and stub spindle service applications |
| Primary Fit | Applications using #84 round non-flanged spindles with L68149 inner bearing and L44649 outer bearing requirements |
| Wheel Fit | Trailer wheels requiring 5 on 4.5" bolt pattern and 1/2-20 lug nuts |
| Notes | Verify spindle dimensions, bearing numbers, seal fit, hub bolt pattern, wheel stud size, lug nut style, axle tube fit, and required load rating before ordering or installation. |
Important Note: This kit is built from the bill of materials for STUB-84-545-H-X2 and is sold as a pair / two-side idler stub axle assembly kit. It does not include brake assemblies and is not listed as a brake-flange spindle kit. Final fitment depends on your trailer setup. Verify all measurements, spindle style, bearing numbers, seal fit, hub bolt pattern, wheel stud size, lug nut style, axle tube fit, and installation requirements before ordering.
R&P Knowledge Hub
Compatibility: Intended for compatible trailer idler hub and stub spindle applications using #84 round non-flanged spindles, 5 on 4.5 idler hubs, L68149 inner bearings, and L44649 outer bearings.
Vehicle / System Fit: Trailer axle repair, idler hub service, utility trailer axle fabrication, and matching stub axle applications where all measurements and components match.
Installation Notes: Welding and axle service should be performed by a qualified installer. Confirm axle alignment, spindle orientation, bearing preload, hub seating, cotter pin placement, lug nut torque requirements, and wheel fit before use.
Performance Insight: Matching the hub, spindle, bearing set, lug nut size, and spindle hardware helps prevent bearing mismatch, wheel fitment problems, and unsafe installation.
Features
Two-Side Assembly Kit
Includes matched quantities for both sides of a compatible trailer idler stub axle setup.
5 on 4.5 Idler Hubs
Uses idler hubs with 5 on 4.5" trailer wheel bolt pattern and 1/2" wheel studs.
#84 Round Non-Flanged Spindles
SP-20084 spindle configuration with 2" x 3.37" tail dimensions for compatible applications.
Bearing Kits Included
Includes HD-3500-KIT bearing kits with L44649 / L68149 bearing reference shown in the bill of materials.
Included Components
| Quantity | Part Number | Item |
|---|---|---|
| 2 | 165649 | Cotter pins, 1/8" x 1-3/4" |
| 2 | 84545-1 | Idler hubs, 3500 lb style, 5 on 4.5, 1/2" studs |
| 2 | FA-SN100 | 1" spindle castle nuts / axle nuts / spindle nuts |
| 2 | HD-3500-KIT | Hub / drum bearing kits, 3500 lb, L44649 / L68149 |
| 2 | SP-20084 | #84 round spindles, 2" x 3.37", non-flanged |
| 2 | SW100 | 1" spindle round washers |
| 10 | X1023R | 1/2-20 x 13/16" lug nuts, 60-degree coned |
