Trailer Hub Kit 5 Bolt 4.5 for 3500 lb Axle - Durable Idler Hub

In this review the Trailer Hub Kit 5 Bolt 4.5 is evaluated as a straightforward replacement idler hub for non-brake trailer wheels. It is best suited to owners of 3500 lb axles with a #84 straight spindle who need a full hub assembly that arrives with bearings, seals and studs already installed. The single biggest reason to buy is convenience: this kit includes inner and outer bearings, grease seals and dust caps so a complete swap is possible without sourcing separate parts, making installation quicker for DIYers and service shops.

Key Features

• Complete hub assembly: Comes with 10 studs and nuts installed so users receive a ready-to-mount 5-hole hub that reduces prep time before installation.
• Bearing set included: Includes two inner L68149/L68111 and two outer L44649/L44610 bearing races for compatibility with common 3500 lb trailer axles.
• Seals and caps supplied: Two grease seals and two dust caps are included to protect bearings from contaminants and prolong service life.
• Corrosion-resistant finish: Chrome steel construction with a coated wheel hub surface helps resist rust and improves long-term durability in outdoor conditions.
• Straight spindle fit: Designed specifically for #84 straight spindles with 1-1/16 in to 1-3/8 in hub bore range, ensuring proper fit on compatible trailers.

Who It's For

This kit is aimed at trailer owners and small shops that maintain utility trailers, boat trailers or other non-electric brake trailers with a 3500 lb axle and a #84 straight spindle. It suits DIY mechanics who prefer receiving a near-complete hub assembly with bearings, seals and studs already installed to speed up a replacement job.

It is not for owners with tapered spindles or trailers that require electric brake hubs; those buyers should look for a hub specifically labeled for tapered spindles or brake-ready assemblies. Also verify spindle diameter before ordering to avoid fit issues.

Pros & Cons

Pros

• Ready-to-install hub assembly saves time sourcing separate bearings and hardware.
• Includes inner and outer bearings plus seals and dust caps for a full bearing service.
• Durable chrome steel and coating offer improved sealing and rust resistance over raw steel hubs.

Cons

• Assembly quality and bearing labeling have mixed feedback from some customers, so check bearing codes on arrival before installation.

Specifications

Our Verdict

The Trailer Hub Kit 5 Bolt 4.5 is a practical, value-focused replacement for trailers with a 3500 lb axle and #84 straight spindle. It delivers convenience by bundling bearings, seals, caps and studs in a coated chrome steel hub, making it a good choice for DIY installers and small shops who want a near-complete swap. Confirm spindle type and inspect bearing markings on arrival to avoid any fit or labeling surprises.

Frequently Asked Questions

Will this fit a tapered spindle?
No. This idler hub is designed for straight #84 spindles only and will not fit tapered spindles.

Are the bearings and seals included?
Yes. The kit includes inner and outer bearings, two grease seals and two dust caps so a full bearing service can be performed.

Can this be used with electric brakes?
No. This is an idler hub assembly for non-brake applications; choose a brake-ready hub if you need electric brake compatibility.