Aftermarket or Genuine Parts?

29 July 2021 | Uncategorized

Getting a service or passing a WOF can sometimes mean needing to have a part or two replaced. So, are genuine or aftermarket parts the better choice?

Well, there’s no right answer. Both genuine parts and aftermarket parts have their pros and cons, so we’ve outlined exactly that below to help you decide on the best option for your car.

What you need to know about Genuine Parts:

  • Buying original parts made by the supplier of your vehicle designed specifically for your car will often come with a warranty, or at least keep your new-car warranty intact. This means that you can rest assured knowing that if your part is faulty or needs to be replaced again, it will likely be covered by the manufacturer.
  • Genuine parts are designed specifically for your vehicle and are VIN specific, so you know you are getting the right part, every time.
  • Genuine parts are, for the most part, higher in quality as the manufacturers produce exact parts for specific reasons.
  • Highly recommended for internal & safety parts such as engine sensors, seals, gaskets, seatbelts, etc.
  • While genuine parts have a lot of great benefits, they often need to be ordered specifically for your vehicle and may mean your car is out of action for some extra time, however, the common parts needing replacement are kept here in New Zealand.
  • Genuine parts are generally the more expensive option when compared with aftermarket parts, especially if they come with a warranty.

What you need to know about Aftermarket Parts:

  • With more suppliers & sources, there is generally a bigger, more varied range of aftermarket parts, meaning you can pick and choose from a greater range of parts and find the part that suits your budget, timeframe, etc.
  • With this, aftermarket parts are usually the cheaper way to go when looking for replacement parts for your vehicle due to more options and more competition between suppliers.
  • Aftermarket parts are usually easier to get. With a bigger range of sources, most parts suppliers will have the part you’re looking for in stock.
  • Aftermarket parts are designed for the most common variant of a vehicle, and while usually correct, there may be fitment/compatibility issues in some sub-models.
  • Aftermarket parts are recommended for non-internal parts i.e. suspension, hoses, brake servicing, etc.
  • While there are a lot of benefits to aftermarket parts, quality is not always guaranteed, and in newer cars, not using genuine manufacturer parts can void warranties.
  • Aftermarket parts generally favour older & common/popular cars.


In conclusion, there are pros and cons to both genuine and aftermarket parts. If you have a newer car that is still under warranty, or the part that needs to be replaced is internal or safety-related, we recommend opting for genuine manufacturer parts. However, if you have an older vehicle, your vehicle is no longer under warranty or the part you need is non-internal, aftermarket parts are definitely worth considering. Be sure to seek professional mechanical advice from a qualified technician or parts consultant when purchasing parts for your vehicle.






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