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MAT 3,500K Trailer Wheel Bearing Kit – Fits 3,500 lb Axles -1.063" x 1.378" Spindle (BEK-3.5K)

$19.95
Most items ship free — select items ship for $6.39
In Stock
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MAT Prepacked Trailer Wheel Bearing Kits

MAT
BEARING COLLECTION

Clean, retail-packed bearing kits for common trailer axle service — built to visually tie the full BEK family together across multiple axle ratings and spindle configurations.

Available in 3.5K • 5.2K • 6.0K • 7.0K
MAT Prepacked Bearing Kit Family

MAT Trailer Wheel Bearing Kit for 3,500 lb Axles — BEK-3.5K

A factory-sealed one-hub service kit for common 3.5K trailer hubs using the standard #84 spindle.

Part Number: BEK-3.5K 3,500 lb Axle #84 Spindle • 1.063" x 1.378"

This complete prepacked bearing kit services one trailer hub and includes matched bearings, races, a double-lip grease seal, tang washer, and cotter pin. Designed for the common 3,500 lb axle spindle profile, it offers a cleaner and more organized alternative to loose component kits for routine maintenance, shelf stock, or emergency spare service.

At-a-Glance Fitment

Outer Bearing
L44649 — 1.063" ID
Inner Bearing
L68149 — 1.378" ID
Races
L44610 / L68111
Grease Seal
10-172 — 1.719" ID x 2.565" OD

Shop the BEK Kit Family

Branded, grab-and-go MAT bearing kits for common trailer axle service across the most frequently requested capacities.

BEK-3.5K

3,500 lb Axle

Spindle: #84 Spindle

Bearings: L44649 / L68149

Use Case: Common light-duty trailer hub service

Shop 3.5K Kit
BEK-5.2K

5,200 lb Axle

Spindle: 1.25" x 1.75" Tapered

Bearings: Matched tapered set

Use Case: Heavier utility and equipment trailer service

Shop 5.2K Kit
BEK-6.0K

6,000 lb Axle

Spindle: 1.25" x 1.75" Tapered

Bearings: Matched tapered set

Use Case: Heavy-duty trailer wheel-end service

Shop 6.0K Kit
BEK-7.0K

7,000 lb Axle

Spindle: 1.25" x 1.75" Tapered

Bearings: Matched tapered set

Use Case: Higher-capacity axle service and spare prep

Shop 7.0K Kit

Why Choose the Prepacked MAT Version?

Retail-Sealed Format

The factory-packed presentation keeps the matching service parts grouped together, protected, and easier to identify than loose components pulled individually.

Grab-and-Go Convenience

A clean one-hub kit works well for quick service, counter sales, routine maintenance, and customers who want a simple matched package.

Easy Spare Storage

This style of kit stores neatly in a toolbox, trailer compartment, or service truck without loose parts getting separated over time.

Fast Visual Verification

Clear axle, spindle, bearing, and seal callouts make it easier for the buyer to verify fitment before teardown or installation.

R&P Knowledge Hub

Compatibility: Fits common 3,500 lb trailer hubs using L44649 outer bearings, L68149 inner bearings, L44610 and L68111 races, and a 10-172 grease seal.

Vehicle / System Fit: Commonly used on many light-duty utility, cargo, and boat trailer hub assemblies built around the #84 spindle profile.

Installation Notes: One kit services one hub. Verify your existing bearing numbers, race numbers, and seal dimensions before ordering. Order two kits to service both hubs on a single axle.

Performance Insight: The matched bearing and seal combination matters because the spindle journals, hub bore, and seal land must work together as a set for proper wheel-end service.

R&P Service Insight

These kits are commonly replaced during routine wheel-end service, after grease seal failure, when old grease is contaminated, or when teardown reveals roughness, heat discoloration, scoring, or wear in the existing bearings and races.

  • Wear: Normal towing cycles gradually wear bearings and races, especially if service intervals are stretched or preload was not correct previously.
  • Exposure: Moisture, road grit, and contaminated grease can shorten bearing life and damage the seal surface over time.
  • Service Reality: A DIY owner may also discover they need fresh grease, a replacement cap, or additional spindle hardware once the hub is opened.

Prepacked vs. Loose Bearing Kits

Format Best For Main Advantage Typical Buyer
Prepacked MAT Kit DIY service, spare storage, and counter sale use Cleaner presentation, easier identification, and shelf-ready packaging Trailer owner, walk-in customer, or first-time service buyer
Loose Kit Shop use or cost-first purchasing Parts-only format with less packaging Repeat buyer, installer, or service shop

What a DIY Trailer Owner May Also Need

Common Service Items

  • High-temp wheel bearing grease
  • Brake cleaner
  • Fresh cotter hardware if needed
  • Grease cap or E-Z Lube plug, if applicable

Possible Additional Parts

  • Replacement races if the old surfaces are pitted or scored
  • Replacement dust cap or grease cap
  • Spindle washer, tang washer, or spindle nut hardware as needed
  • Related hub or brake parts if additional wear is found

Features

  • Complete one-hub bearing kit for common 3,500 lb trailer axle service
  • Fits the standard #84 spindle using L44649 and L68149 bearings
  • Prepacked retail format keeps matching service parts grouped and easy to identify
  • Includes double-lip 10-172 grease seal for a stronger barrier against contamination

Specifications

Specification Detail
Type Trailer Wheel Bearing Kit
Application One-hub service kit for common 3,500 lb trailer hubs
Fitment #84 spindle hub applications
Outer Bearing L44649 — 1.063" ID
Inner Bearing L68149 — 1.378" ID
Outer Race L44610
Inner Race L68111
Grease Seal 10-172 — 1.719" ID x 2.565" OD
Hardware Tang washer and cotter pin
Part Number BEK-3.5K

Fitment / Application

Category Details
Vehicle / System Many light-duty utility, cargo, and boat trailer hub systems using the #84 spindle profile
Axle / Capacity 3,500 lb axle
Spindle #84 spindle with 1.063" outer journal and 1.378" inner journal
Notes Verify existing bearing and seal numbers before ordering. One kit services one hub. Order two kits if servicing both hubs on a single axle.

Included Components

Quantity Item
1 L44649 outer bearing
1 L68149 inner bearing
1 L44610 outer race
1 L68111 inner race
1 10-172 double-lip grease seal
1 Tang washer
1 Cotter pin

Verify all specifications, measurements, bearing numbers, and seal callouts before installation.

R&P Carriages