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Trailer Parts Pro 2,200 lb Trailer Axles Pre-Greased Idler Hub Assembly, 5 on 4.5" Bolt Pattern, BT8 Spindle,5 -1/2" Idler Hub Flange Diameter, 1/2" Studs, H34822545BX


Regular price $51.49 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 complete pre-greased trailer idler hub assembly provides a highly reliable servicing solution for 2,000 lb axles equipped with BT8 1" spindles. Outfitted with a 5 on 4.5" bolt pattern and 1/2" studs, the hub comes with the inner and outer bearing races already pressed in for effortless installation. Its durable painted finish and dual compatibility with both standard grease and Zerk-lube configurations ensure long-lasting performance and hassle-free hub maintenance.

What's Included:

1 x 5 on 4.5" Pre-Greased Hub

2 x L44643 Inner and Outer Bearings

2 x L44610 Inner and Outer Races

1 x 12192TB Grease Seal

1 x 46749 Grease Cap

1 x 21-41-1 Grease Cap

1 x 85-1 Grease Cap Plug

5 x X1023R Coned Wheel Nuts

Specifications:

Brand: Trailer Parts Pro

Manufacture Part Number: H34822545BX

Alternate Item Number: PP88545

Bolt Pattern: 5 on 4.5"

Axle Capacity Rating Per Pair: 2.2K

Capacity Per Hub: 1,250 lbs

Fits Spindle: BT8 1"

Stud Size: 1/2"

Accepts Wheel Diameter: 8" - 12"

Hub Flange Diameter: 5-1/2"

Overall Height: 4"

Finish: Painted

Inner Bearing Part Number: L44643

Outer Bearing Part Number: L44643

Seal Inner Diameter: 1.249"

Thread Count: 20

Lubrication: Grease or Zerk-Lube

Payment & Security

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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

  • 5 stars: 3 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Arturo Molina
Buena Compra

Se ajustó perfectamente al remolque y la instalación fue rápida y sencilla.

C
Cristian Meza
Buen Ajuste

La pieza se ve bien hecha y funcionó tal como esperaba.

G
Gabriel Padilla
Smooth Fit

Fit my trailer cleanly and installation was quick with no unnecessary hassle.

  • 5 stars: 3 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Arturo Molina
Buena Compra

Se ajustó perfectamente al remolque y la instalación fue rápida y sencilla.

C
Cristian Meza
Buen Ajuste

La pieza se ve bien hecha y funcionó tal como esperaba.

G
Gabriel Padilla
Smooth Fit

Fit my trailer cleanly and installation was quick with no unnecessary hassle.