OEM vs Aftermarket Parts

Charlie Admin • 22 February 2026

OEM vs Aftermarket Parts

What’s the Real Difference?


When your tractor or machine needs parts, one question sometimes comes up:


'Should I go OEM or aftermarket?'


It’s a fair question, and the answer isn’t always black and white. We fit both depending on the situation, the machine, and the customer’s priorities.


So let’s break it down properly.


What Are OEM Parts?


OEM stands for Original Equipment Manufacturer.

These are parts made by or for the original manufacturer of your tractor or machine. For example:


  • Parts supplied directly through Massey Ferguson AGCO
  • Components from John Deere
  • Genuine replacements for Kubota machines

OEM parts are designed to be an exact match for your machine, same specifications, same materials, same fit as when it left the factory.


Benefits of OEM:


  • Guaranteed fit
  • Built to original specifications
  • Backed by the manufacturer's warranty
  • Peace of mind on critical components

Downsides:


  • Usually more expensive
  • Sometimes longer lead times


What Are Aftermarket Parts?


Aftermarket parts are made by third-party manufacturers, not the original brand. But designed to fit and function in your machine. Quality can vary significantly. Some aftermarket parts are built to extremely high standards and offer excellent value for money. Others… not so much.


Benefits of Aftermarket:


  • Often more affordable
  • Widely available
  • Good option for older machines
  • Can offer equivalent performance

Downsides:


  • Quality varies between suppliers
  • Not always identical to OEM specs
  • May affect the manufacturer's warranty on newer machines


So… Which Should You Choose?


It depends on:


The Age of the Machine


If it’s a newer tractor still under warranty, OEM is usually the safest route.

If it’s an older workhorse that’s out of warranty, a high-quality aftermarket can make financial sense.


The Type of Repair


For critical components like:


  • Engine internals
  • Transmission parts
  • Electronic components

We often recommend OEM.


For:


  • Filters
  • Bearings
  • Linkage components

A trusted aftermarket brand can be a very sensible choice.


Downtime vs Cost


In farming, downtime is expensive. If a machine needs to be back in the field quickly, availability may matter more than brand name.


We always look at:


  • What gets you running reliably
  • What makes financial sense
  • What protects the long-term health of the machine


The Truth: Not All Aftermarket Parts Are Equal


This is where experience matters.

We’ve seen:


  • Cheap pattern parts fail prematurely
  • Poor tolerances cause repeat breakdowns
  • “Bargain” components costing more in labour the second time around

But we’ve also fitted excellent aftermarket parts that perform just as well as OEM, at a lower cost.

It comes down to supplier quality and proper fitting.


Our Approach


We don’t push parts just to increase invoices. If OEM is genuinely the better option, we’ll say so.

If a quality aftermarket alternative will do the job properly and save you money, we’ll say that too.

Every job is assessed on:


  • Machine condition
  • Application
  • Budget
  • Long-term reliability

Because what matters most is keeping your machinery dependable, not just getting it out of the workshop door.


On A Side Note


Many manufacturers don’t actually make every component themselves. In fact, a lot of OEM parts are produced by specialist suppliers.


For example:


  • Grammer – tractor and machinery seats
  • Hella – lighting and electrical components
  • Cobo – switches, columns, and electrical parts
  • SKF – bearings and drivetrain components
  • Donaldson Company – air and oil filtration systems
  • Bosh - Hydraulic system components


To name a few.


These companies often manufacture the original component that goes onto the tractor at the factory.

When you buy the part in branded OEM packaging, you’re sometimes paying for:


  • Manufacturer branding
  • Dealer distribution margins
  • Packaging and handling costs

In certain cases, we can source the same manufacturer’s part elsewhere without the tractor brand label, at a lower cost, while maintaining the same quality and specification.


Final Thoughts


OEM vs aftermarket isn’t about right or wrong.

It’s about:


✔ Suitability
✔ Reliability
✔ Budget
✔ Honest advice


If you’re unsure what’s best for your machine, just ask. We’re always happy to help.



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