22017K 2PCS Trailer Idler Hub Kits 5 on 4.5 for 3500 lbs Axle 1/2-20 Thread

Product Overview

This aftermarket replacement trailer idler hub kit is supplied as a two-piece set intended for 3500 lbs axle applications and references part number 22017K. A trailer idler hub assembly supports the wheel and allows it to rotate freely on the spindle, helping the trailer roll smoothly during towing. The kit is designed around a 5 on 4.5 bolt pattern with 1/2"-20 thread wheel studs.

Key Features & Performance

• Idler hub assemblies support wheel rotation on trailer axles that do not drive the wheels.
• Fits 3500 lbs axle applications as indicated by the listing title.
• Features a 5 on 4.5 wheel bolt pattern with 1/2"-20 thread studs.
• Cross-references part number 22017K for comparison with the original component.
• Supplied as a set of two hub kits for servicing both sides of an axle.

Fitment & Compatibility

• for 3500 lbs axle applications
• for 5 on 4.5 wheel bolt pattern applications
• for 1/2"-20 thread stud applications

Common Uses

• Replacing a worn, damaged, or malfunctioning trailer idler hub.
• Routine maintenance or rebuild of a trailer axle hub assembly.
• Restoring normal wheel rotation on a trailer axle after the existing hub has failed.

Technical Specifications

• Product Type: Trailer Idler Hub Kit
• Part Number(s): 22017K
• General Application: 3500 lbs axle
• Bolt Pattern: 5 on 4.5
• Stud Thread: 1/2"-20
• Quantity: 2 pieces

Frequently Asked Questions

Q: What does a trailer idler hub do? A: A trailer idler hub supports the wheel on the axle spindle and allows it to rotate freely so the trailer can roll during towing.

Q: How do I verify fitment? A: Compare the existing hub part number and axle rating against the 22017K reference number and confirm the 5 on 4.5 bolt pattern and 1/2"-20 stud thread match your trailer before purchase.

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.