Trailer Idler Hubs / 3,500 lb Axle Hub Kit
Pair of 3,500 lb Trailer Idler Hubs — 5×4.75 Bolt Pattern
Two-hub trailer idler hub kit for 3,500 lb axle applications using a 5×4.75 wheel bolt pattern, L68149 inner bearings, L44649 outer bearings, and 10-19 grease seals.
Part Number: SH2RV5475-KITX2 Pair / 2 Hub Assemblies 5×4.75 Bolt Pattern
Overview
This R&P Carriages trailer hub kit includes two idler hub assemblies for standard 3,500 lb trailer axle applications where the bearing sizes, seal size, spindle dimensions, and 5×4.75 bolt pattern match. Each hub has races pre-installed and is supplied with the listed bearing, seal, and EZ-Lube dust cap components for service replacement or trailer hub rebuild work.
R&P Service Insight
Trailer hubs are fitment-sensitive parts. Matching the bolt pattern is only one step; the bearing numbers, seal dimensions, spindle style, and cap size all need to line up before installation.
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Bearing Match: This kit is built around L68149 inner bearings and L44649 outer bearings.
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Seal Check: The included 10-19 seal is listed as 1.719" x 2.56". Verify this against the removed seal before installing.
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Idler Hub Use: This listing is for idler hubs, not brake drum hub assemblies.
R&P Knowledge Hub
Compatibility: For 3,500 lb trailer axle idler hub applications using a 5×4.75 bolt pattern, L68149 inner bearing, L44649 outer bearing, and 10-19 grease seal.
Vehicle / System Fit: Used on compatible trailer idler axle setups, including utility, cargo, boat, and similar trailer applications where all measurements match.
Installation Notes: Confirm the bearing numbers, seal inner and outer diameter, wheel bolt pattern, stud size, dust cap size, and spindle profile before ordering or installing.
Performance Insight: Correct hub fitment helps the wheel, bearings, seal, and spindle work together properly. A mismatch in bearing size, seal size, or bolt pattern can prevent safe installation.
Brand & Fitment Note
Selling Brand: R&P Carriages
Application Reference: Any axle or trailer application language in this listing describes compatibility style only where the listed bearing sizes, seal size, bolt pattern, stud size, and hub configuration match.
What This Means: This listing is for an R&P Carriages trailer idler hub kit, not a guaranteed OEM-branded item unless specifically stated and verified.
Before Ordering: Verify measurements, bearing numbers, seal dimensions, bolt pattern, stud size, dust cap size, axle configuration, and included components before installation.
R&P Repair Insight
When replacing trailer hubs, the most common fitment mistakes are mixing up 5-lug bolt patterns, assuming all 3,500 lb axles use the same seal, or overlooking whether the trailer uses an idler hub or a brake drum hub.
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Bolt Pattern Check: Confirm your wheel uses the 5×4.75 bolt pattern before ordering.
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Spindle Check: Verify the inner and outer bearing IDs match your spindle before installation.
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Seal Surface Check: Inspect the spindle seal surface for wear or scoring before installing new seals.
Features
Pair of Idler Hubs
Includes two idler hub assemblies for servicing both sides of a compatible trailer axle setup.
5×4.75 Bolt Pattern
Designed for trailer wheels using the 5×4.75 wheel bolt pattern with 1/2" studs.
Pre-Installed Races
Each hub is supplied with races already installed, reducing prep work during hub service.
Bearing & Seal Components Included
Includes the listed L44649 outer bearings, L68149 inner bearings, 10-19 seals, and 1.98" EZ-Lube dust caps with rubber inserts.
Specifications
| Specification |
Detail |
| Part Number |
SH2RV5475-KITX2 |
| Brand |
R&P Carriages |
| Product Type |
Pair of trailer idler hubs with bearing and seal components |
| Application |
3,500 lb trailer idler axle applications where specifications match |
| Material / Finish |
Not specified |
| Quantity |
2 hubs + 2 bearing/seal kits |
| Axle Rating |
3,500 lb |
| Bolt Pattern |
5×4.75 |
| Stud Size |
1/2" studs |
| Included Bearings Per Hub |
L44649 outer bearing, 1-1/16" ID
L68149 inner bearing, 1-3/8" ID |
| Seal Per Hub |
10-19 seal, 1.719" x 2.56" |
| Dust Cap Per Hub |
1.98" EZ-Lube dust cap with rubber insert |
| Race Installation |
Races pre-installed in hubs |
Fitment / Application
| Category |
Details |
| Vehicle / System |
Trailer idler axle hub system |
| Primary Fit |
3,500 lb trailer idler axles using L68149 inner bearings, L44649 outer bearings, and 10-19 seals |
| Secondary Fit |
Trailer wheels requiring a 5×4.75 bolt pattern and 1/2" wheel studs |
| Notes |
Verify bearing numbers, seal size, spindle dimensions, bolt pattern, stud size, and cap size before ordering. This is an idler hub kit and is not for brake drum hub applications. |
Included Components
| Quantity |
Item |
| 2 |
Trailer idler hub assemblies with races pre-installed |
| 2 |
L44649 outer bearings, 1-1/16" ID |
| 2 |
L68149 inner bearings, 1-3/8" ID |
| 2 |
10-19 grease seals, 1.719" x 2.56" |
| 2 |
1.98" EZ-Lube dust caps with rubber inserts |
Verify all measurements, bearing numbers, seal dimensions, spindle fit, wheel bolt pattern, stud size, dust cap size, axle configuration, and included components before installation. 3,500 lb trailer axle hub parts can vary by manufacturer, and bolt pattern or bearing mismatch can prevent correct fitment.
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