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Trailer Parts Pro 3,500 lb Trailer Axle Pre-Greased Hub-Drum Assembly 5 on 4.5" Bolt Pattern, #84 Spindle,1/2" Studs, HD84546BX


Regular price $96.79 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 hub-drum assembly offers a streamlined replacement solution for 3,500 lb capacity axles equipped with #84 spindles. Designed with a 5 on 4.5" bolt pattern and 1/2"-20 studs, the assembly delivers peak convenience by arriving ready to install with the inner and outer bearing cups already preinstalled into the hub body. The retail-boxed kit features dual grease or Zerk-lube compatibility and integrates seamlessly with 10-inch electric or hydraulic drum brake systems to restore optimal braking performance.

What's Included by Kit Option:

Pre-greased Hub and Drum

Inner Bearing

Outer Bearing

Preinstalled Inner Bearing Cup

Preinstalled Outer Bearing Cup

Grease Seal

Grease Cap

Rubber Plug

Wheel Nuts

Specifications

Brand: Trailer Parts Pro

Manufacture Part Number: HD84546BX

Reference Number: 116629

Alternate Item Numbers: PP94545, PPG94545, 7650030-03B

Bolt Pattern: 5 on 4.5"

Axle Capacity Rating Per Pair: 3.5K

Capacity Per Hub-Drum: 1,750 lbs

Fits Spindle: #84

Stud Size: 1/2"-20

Thread Count: 20

Nut Type: Cone Nut

Inner Bearing Part Number: L68149

Outer Bearing Part Number: L44649

Seal Inner Diameter: 1.719"

Compatible Brake Size & Type: 10-Inch Electric or Hydraulic Drum Brakes

Lubrication: Grease or Zerk-Lube

Finish: Painted

Attachment Type: Bolt-On

Orientation: Left or Right Side

Pre-greased: Yes

Spindle Components Included: No

Application: Trailer Use Only

Brand Fitment: Dexter, Rockwell, Hayes / ALKO, and more

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: 4 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Ricardo Bautista
Fast Install

Strong-looking hub and drum assembly with accurate fitment for my trailer.

C
Caleb Warren
Good Results

Saved installation time.

E
Evan Marshall
Sturdy Part

The replacement hub fit securely and has been working properly since installation.

G
Gerardo Tapia
Excelente Ajuste

El conjunto preengrasado fue muy práctico y ahorró tiempo durante el montaje.

  • 5 stars: 4 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Ricardo Bautista
Fast Install

Strong-looking hub and drum assembly with accurate fitment for my trailer.

C
Caleb Warren
Good Results

Saved installation time.

E
Evan Marshall
Sturdy Part

The replacement hub fit securely and has been working properly since installation.

G
Gerardo Tapia
Excelente Ajuste

El conjunto preengrasado fue muy práctico y ahorró tiempo durante el montaje.