Which Hub Fits EZ Loader Trailers? | Identification Guide

Which Trailer Hub Do I Need?

Choosing the correct trailer hub is not based on appearance—it’s based on your spindle, hub system, and configuration.

This guide will help you quickly identify what you have so you can match the correct replacement the first time.

👉 If you're unsure, call us—we’ll help you confirm it before you order.

Step 1 — Identify Your Hub Type

Start by determining which system your trailer uses:

  • Oil Bath Hub → Clear cap, visible oil inside
  • Grease Hub → Solid cap, grease-packed bearings

👉 These systems are not interchangeable.

Learn more about Oil Bath Hubs

Step 2 — Check Lug Pattern

  • 5 Lug → Common on lighter trailers
  • 6 Lug → Common on mid-range trailers

👉 Lug pattern helps narrow it down—but does NOT confirm fitment.

Step 3 — Identify Your Spindle

This is the most important step.

  • Spindle size determines bearing fitment
  • Hubs must match spindle exactly

👉 If the spindle does not match, the hub will not fit.

Common ways to identify:

  • Check existing hub or bearing numbers
  • Measure spindle (inner/outer bearing surfaces)
  • Use trailer model as reference

Step 4 — Confirm Hub System

  • Oil Bath (BT150A, etc.)
  • Grease Hub Systems

👉 Always match your existing system unless converting intentionally.

Step 5 — Match Your Trailer Model (If Known)

In many cases, your trailer model can help confirm the correct hub.

  • EZ Loader model number
  • Axle type (spring or torsion)
  • Original hub system

👉 Model helps guide selection—but measurements confirm it.

Quick Summary

  • Identify hub type (oil bath or grease)
  • Check lug pattern
  • Confirm spindle size
  • Match system and configuration

👉 Fitment is determined by spindle—not by appearance.

Need Help Matching Your Hub?

At 411-Trailers Group, we match hubs based on real trailer setups—not guesswork.

Have this ready:

  • Trailer model (if known)
  • Hub type (oil bath or grease)
  • Lug count
  • Any part numbers on existing hub

Shop Trailer Hubs for EZ Loader

👉 Call us—we’ll help you get it right the first time.

Long-Term Consideration

As trailers age, multiple component repairs can begin to add up. Reviewing your overall trailer setup can help determine whether continued maintenance or full replacement is the better long-term solution.

See EZ Loader Trailer Setups and Fitment Examples

👉 This is a reference for comparison—not a recommendation. Proper fitment and condition should always guide the decision.

Back to top