How to Use an OEM Part Number to Find Replacement Parts
Finding the correct replacement part can be difficult when several components look similar or a vehicle was produced with different specifications. One of the best pieces of information you can have when searching is the OEM part number from the original component.
Here's how to find it and use it effectively.
What Is an OEM Part Number?
OEM stands for Original Equipment Manufacturer.
An OEM part number is an identifying number assigned to a particular component by a vehicle manufacturer or its original equipment supplier.
Depending on the part, the number may contain letters, numbers, dashes or a combination of all three.
Where Can You Find the Part Number?
The location depends on the component. Look for a:
- Printed label
- Sticker or barcode
- Engraved number
- Stamped number
- Molded number in plastic
- Identification plate
Cleaning dirt, oil or corrosion from the original component may make the number easier to find.
Why Is the OEM Number Useful?
Searching by vehicle year, make and model is a good starting point, but it doesn't always identify the exact component.
Manufacturers may use different parts depending on:
- Engine
- Transmission
- Drivetrain
- Trim level
- Production date
- Body configuration
- Factory equipment
An OEM number provides another valuable reference when comparing replacement parts.
Make Sure the Number Is Exact
Check every character carefully.
For example, a part number ending in A may represent a different version or revision from one ending in B.
Don't assume two similar numbers identify the same component unless the listing specifically states that one number replaces, supersedes or interchanges with the other.
Check More Than Just the Number
An OEM number is extremely useful, but you should still read the product's complete fitment information.
Compare the replacement part's:
- Connectors
- Mounting points
- Dimensions
- Position
- Vehicle compatibility
- Product photographs
- Fitment notes
This provides another layer of protection against ordering an incompatible component.
What If You Can't Find the Number?
Don't worry if the original number is damaged or impossible to locate.
Gather as much information about the vehicle as possible, including the year, make, model, engine, trim and drivetrain.
Photographs of the existing component can also be useful when comparing potential replacements.
Need Help Finding a Replacement?
USA Auto Parts Direct supplies replacement and aftermarket automotive parts for cars, trucks and SUVs.
If you're having trouble identifying a component, email usaautopartsdirect@gmail.com with your vehicle details and OEM or existing part number where available.
We'll help you identify suitable options from our available range.