EZ Loader trailer hub installed on axle showing oil bath hub assembly and 5 lug configuration

Trailer Hubs for EZ Loader

Trailer hubs are critical for safe towing and reliable wheel performance. The correct hub ensures proper bearing fitment, smooth rotation, and consistent load support at highway speeds.

Most EZ Loader owners fall into one of two situations:

  • Replacing a complete hub assembly (oil bath or grease)
  • Servicing an existing hub with bearings, seals, or caps

Choosing the right hub is not based on appearance alone. Fitment depends on your axle type, spindle size, bolt pattern, and whether your setup uses an oil bath or grease system. Many hubs look similar—but are not interchangeable.

EZ Loader trailers commonly use 5-lug and 6-lug hub configurations, with variations based on load capacity and wheel size.

At EZLoaderParts411.com, we match trailer hubs based on real-world EZ Loader setups—not guesswork. If you're unsure what fits your trailer, call us before ordering and we’ll help you get it right the first time.

Looking for internal components?
→ Shop Trailer Hub Parts (bearings, seals, caps, and hardware)

How to Choose the Right Trailer Hub

Choosing the correct trailer hub starts with your spindle. Many hubs look similar but use different bearings and are not interchangeable.

  • Spindle size and bearing numbers
  • Hub type (oil bath vs grease)
  • Bolt pattern (5-lug or 6-lug)
  • Load capacity

👉 The spindle determines the hub—not the other way around.



Oil Bath vs Grease Hubs

Oil Bath Hubs

  • Run cooler at highway speeds
  • Visible oil level through clear cap
  • Common on newer EZ Loader trailers

Grease Hubs

  • Simpler maintenance
  • Traditional design
  • Common on older trailers

👉 The correct system depends on your trailer setup.



Complete Hub System

A hub is part of a larger system—not a standalone component.

  • Hub assembly
  • Bearings
  • Seals
  • Caps (oil bath or grease)

👉 Matching all components correctly prevents failure and improves reliability.

Hub Selector — Start Here

Not sure which hub fits your trailer? Use this quick guide to narrow it down before ordering.

Step 1 — Identify Your Spindle

  • Measure spindle diameter at inner and outer bearing locations
  • Or check bearing numbers stamped on existing bearings

👉 This is the MOST important step.

Step 2 — Choose Your Hub Type

  • Oil Bath: clear cap, oil lubrication, runs cooler
  • Grease: traditional grease-packed hub

Step 3 — Confirm Bolt Pattern

  • 5-lug or 6-lug configuration
  • Must match your wheels exactly

Step 4 — Match Load Capacity

  • Light-duty (PWC, small boats)
  • Standard single axle trailers
  • Heavier tandem axle setups

👉 Never undersize a hub for your application.

Still Not Sure?

Call us with your trailer model or bearing numbers—we’ll match it correctly the first time.

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