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HAULK DEPOT

Trailer Bearing Race – 3920 – For 3984 Bearings
SKU: TBR3920
$17.25 USD $17.25 USD
Shipping calculated at checkout.
In stock
Description

The 3920 bearing race is designed for use with 3984 tapered roller bearings and is commonly found in 12,000–15,000 lb trailer axle assemblies. With a 4.438" outer diameter, it provides a smooth, heavy-duty surface that ensures proper bearing alignment and long-lasting hub performance under extreme towing conditions. Bearing sold separately.

Detailed Information:
Outer Diameter 4.438 inches
Matching Bearing 3984 (sold separately)
Fitting:

Fits trailer hubs designed for 12K–15K axles. Commonly used in heavy-duty Dexter-style hub assemblies. Presses securely into the hub to support smooth, low-friction bearing rotation.

Features:
  • Precision Fit: Machined to exact tolerances for seamless integration with 3984 bearings.
  • Heavy-Duty Design: Built for high-load, high-speed performance in commercial and industrial trailers.
  • Reliable Operation: Maintains bearing alignment and protects against wear in harsh towing environments.
Interchangeable Part Numbers:
  • DEXTER 3920
  • TIMKEN 3920
  • BRAKES4TRAILERS TIM3920
Product Overview:

The 3920 race is essential for maintaining stability and load distribution in large trailer axle hubs. When paired with the 3984 bearing and quality grease, it ensures extended hub life and dependable performance over long distances.

We want you to be completely satisfied with your purchase. That’s why we offer a hassle-free return policy within 30 days of delivery*. If your item is unused, in original packaging, and eligible for return, you can send it back for a refund or exchange.

*Some exclusions may apply

Some of our products are backed by a 1-year limited manufacturer warranty covering defects in materials and workmanship under normal use. If you experience any issues during this period, we’ll work with you to repair, replace, or resolve it according to warranty terms.*

*Proof of purchase required

Need it fast? We’ve got you covered. Orders confirmed before 3 PM Eastern Standard Time (Monday–Friday) are processed and shipped out the same business day. Orders placed after the cutoff will ship the next business day.
Trailer Bearing Race – 3920 – For 3984 Bearings

Customer Reviews

Based on 12 reviews
83%
(10)
17%
(2)
0%
(0)
0%
(0)
0%
(0)
E
Enrique Silva
Essential Maintenance Item

Must-have for replacing old races, ensures hub longevity.

J
Jedd Wozencroft
Extremely Reliable

Handles long hauls on heavy trailer, bearings protected perfectly.

R
Rolph Cheyney
Minor Cosmetic Scratch

Small mark from shipping, does not affect function.

R
Ricardo Gonzalez
Durable and Precise

Fits tight, provides smooth rotation, no issues after several trips.

P
Petr Ivanov
Industrial-Grade Performance

Used on commercial trailer, heavy-duty design holds up well.

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