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RGP 3,500 lbs Trailer Idler Hub 5 on 4.5 Bolt Pattern with 1/2" Studs for #84 Spindle,88-545-02


Regular price $29.89 USD
Shipping calculated at checkout.

Care information

To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:

  • Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
  • Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
  • For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
  • Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
  • Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
  • After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
  • If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.

Delivery and Shipping

Handling Time: Orders ship out within 1 business day after payment is received.

Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.

Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).

Tracking: A tracking number will be provided once your order is dispatched.

This brake assembly fits most standard 7,000 lb trailer axles that use 12" × 2" electric brakes with a 5-bolt mounting flange. Please verify your axle rating and brake dimensions before ordering. If you're unsure, send us your axle tag or hub information and we'll help confirm compatibility.
Yes. It is compatible with many standard Dexter, Lippert, Rockwell American, AL-KO, and other 7,000 lb trailer axles that use a standard 12" × 2" brake assembly. Always verify your axle specifications before purchasing.
Yes. This is a self-adjusting electric brake assembly, which automatically maintains proper brake shoe clearance during normal operation. This reduces maintenance and helps provide consistent braking performance.

Product Overview:

This 3,500-lb trailer idler hub fits #84 spindles with a 5 on 4.5-inch bolt pattern. The L68111 inner race and L44610 outer race come pre-installed, so you can skip the pressing step. Five 1/2-inch studs are already in place, and the hub accepts 12 to 15-inch rims. Each hub is rated at 1,750 lbs. This unit directly replaces part numbers 88-545, 88-545-02, and 88-545-09 on Dexter, AL-KO, and other 3.5K idler axles. Works on utility trailers, flatbeds, cargo trailers, and campers.

What's Included by Kit Option: 

1 x Cast Iron Idler Hub for 3.5K Axles

5 x 1/2" High-Strength Wheel Studs (Pre-installed in hub)

Specifications:

Brand: Running Gear Parts

MPN: 88-545-02

Axle Rating Capacity: 3,500 lbs 

Individual Hub Rating: 1,750 lbs

Bolt Circle Pattern: 5 on 4-1/2 inches

Wheel Size Matching: Accepts 12", 13", 14", and 15" rims

Pre-Installed Races: L68111 (Inner position) and L44610 (Outer position)

Stud Size: 1/2-inch 

Spindle Configuration: #84 Spindle

Replacement & Brand Compatibility

It operates as a seamless replacement alternative for major market axle brands, including Dexter, AL-KO, and other common industry manufacturers. Perfect for restoring operation on flatbeds, utility trailers, equipment haulers, enclosed cargo trailers, stock haulers, and recreational campers.

  • Cross-Reference / Interchangeable Part Numbers: Dexter 08-248-5, Dexter K08-248-90, Dexter K08-248-95, Dexter 84545BX

 

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  • 5 stars: 5 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
L
Luke Dawson
Very Pleased

Good 2,000 lb idler hub with accurate fitment and a simple installation.

E
Elias Rendon
Instalación Rápida

El conjunto de cubo encajó perfectamente y el montaje fue rápido y sencillo.

E
Emanuel Montalvo
Perfect Match

This 3,500 lb hub matched the bolt pattern and went on without trouble.

E
Eduardo Rosales
Easy Job

The hub kit was easy to install and felt solid once mounted.

T
Trevor Hamilton
Built Well

The 3,500 lb hub assembly fit well and made the replacement straightforward.

  • 5 stars: 5 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
L
Luke Dawson
Very Pleased

Good 2,000 lb idler hub with accurate fitment and a simple installation.

E
Elias Rendon
Instalación Rápida

El conjunto de cubo encajó perfectamente y el montaje fue rápido y sencillo.

E
Emanuel Montalvo
Perfect Match

This 3,500 lb hub matched the bolt pattern and went on without trouble.

E
Eduardo Rosales
Easy Job

The hub kit was easy to install and felt solid once mounted.

T
Trevor Hamilton
Built Well

The 3,500 lb hub assembly fit well and made the replacement straightforward.