OES Parts – The Secret To Big Deals On OEM

Even though we here at eEuroparts.com live and breath this every day, I realize that others might not know the (non) secret of OES.  OES stands for Original Equipment Supplier, and we have thousands of OES parts on our website, with more being added every day. We are always working to acquire more OES parts, and find more OEM manufacturers to make solid partnerships with. We label OES parts OEM, and Genuine Parts Genuine on eEuroparts.com.  If you see a part that says Quality: OEM, you are getting a Genuine quality part.  If you’re one of the many people that are hazy on what this concept really means, you will be asking:

What are OES parts and why are they so good?

OES (AKA OEM, Original Equipment Manufacturer) parts are made by the same company that makes the genuine dealer part.  Say you have a SAAB 9-5 and come across the unfortunate circumstance of needing to replace a throttle body.  You, a conscious minded consumer that has a penchant for quality would opt to buy the Genuine SAAB throttle body.  However, because we are direct with Hella, we have a Hella SAAB 9-5 throttle body for substantially less than the genuine (so much less that we don’t even bother to carry the Genuine SAAB throttle body anymore).

OES Parts are Labeled ‘OEM’ on our website, because it is the more general term. The rule of thumb is that parts labeled OEM are the same quality as Genuine for less money.

SAAB 900 Belts

This Genuine SAAB set of belts is clearly labeled Contitech. We carry the exact same set of OES Contitech belts by the OEM brand Continental, just without the SAAB logo.

Now, you might be thinking, well I don’t want the Hella part, I want Genuine SAAB.  That right there is the beauty of OES, and why we concentrate so heavily on carrying these parts.  Because the Hella throttle body is the OES part, it means if you were to actually get the genuine version, chances are you will find a Hella stamp on it.  Same part, made in the same factory, made with the same tools.  The only difference is, often time they will have a separate case to finish, and the part will not be distributed through the dealer network.

Why are these even available?

In many contracts that OEMs make when signing up to be the OES for a car company, they will include provisions to sell the part under their own name.  It works out beneficially for both parties because the car company, such as BMW, wont have to dedicate the in-house resources to physically produce a part, a task that can easily be done elsewhere.  The OEM will benefit because they will be able to make extra profit on the side by selling the parts they make through the aftermarket distribution market, while also not having to pay for the R&D involved with custom tooling and development.  The last bonus is that we are able to buy OEM parts on the aftermarket and pass the savings onto our customers that demand only the best.

Hella Genuine BMW

This BMW Headlight is made and sold by the German company Hella, the OES, at nearly half the price of Genuine BMW.

Now sometimes a car company will task an OES completely with designing a component, but these are to ensure components are made at the best quality and best price possible.  The idea is that the specialist (say, Bosch) might have a better understanding on how to design and produce a fuel pressure regulator, or ignition coil than BMW’s car designers.

How do I know I am buying OES parts?

Audi OEM OES parts

This OES part has had the Audi rings [poorly] ground off to sell on the aftermarket. You will find this part in Genuine Audi with the rings intact.

Because each deal between the OEM manufacturer and car company is different, there is no cut and dry answer to this.  We usually have this information and try to let you know on every listing, but not all listings will include if a part is OES because sometimes even we don’t know.  However, there are some interesting queues that you can pick up on if you pay attention.  Because the parts are being sold through the aftermarket sector at a greatly reduced price by the original equipment supplier, they cannot be labeled with the Genuine logo, and in many cases the Genuine part number.

In the case of the Hella throttle body, they just make a different electronics cap that doesn’t have a SAAB logo on it.  For other Genuine parts that have these logos and part numbers cast or etched into the part itself, the OES will often be forced to grind these off before selling them as their own.  The result will be a part with a die ground area on it.  Commonly you will see Hutchinson engine mounts with grinding marks on them, because they are a huge original equipment supplier to a variety of companies.

A few of the best OES companies include Valeo, Hutchinson, Sachs, Akebono, Elring, Febi, Bosch, Pierberg, Wahler, NGK, Hella, Vemo, FTE, INA, Continental Contitech, SKF, Mahle, FAG, BEHR, Nissens, VDO, Ate, ZF, HEPU, LUK, MANN, Meistersatz, TI Automotive (formerly Walbro), the list goes on.  When you buy a part from these OEM manufacturers, you can be sure they are the best possible quality at an aftermarket price.

Now, it’s important to realize that some of these powerhouse manufacturers may also source parts strictly for the aftermarket, such as Bosch, Behr, and Febi, who may have multiple grades of parts, from OES to Aftermarket.  A more comprehensive post on how this works is in the pipe.

That’s how we save you money, without compromising quality, and we just thought you should know!

11 thoughts on “OES Parts – The Secret To Big Deals On OEM
  1. I still remember the OES brake master cylinder for my ’88 900 with the Saab name ground off of the plastic reservoir. It worked great, and was $25 less than the one where no one was paid the time to grind the letters off with a Dremel tool.

  2. Sylvia Dunn

    My 2013 Volvo XC90 reads the following; “anti skid service required”. I took it to the dealer, but their fee is roughly $1,200. What is the name of the part that is required to fix it? How much is the price?

    Thank you,


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