How to check OEM part number?
A quick way to verify an OEM part number is to locate the exact number on the part itself or its packaging and then confirm it against the original manufacturer’s official catalog or a trusted dealer database to ensure a correct fit.
When replacing a component, knowing the precise OEM number helps guarantee compatibility, preserve warranty coverage, and avoid ordering the wrong item. This guide outlines where to find the number, how to verify it with official sources, and common considerations to avoid mistakes.
Understanding OEM part numbers
OEM part numbers are the manufacturers’ unique identifiers assigned to each component used in their products. They differ from aftermarket or generic numbers and can vary in format by brand or region. Using the correct OEM number ensures you are ordering the exact part designed for your model and equipment.
Format and variations
Different manufacturers format OEM numbers in different ways. Some use simple numeric codes, others include letters, dashes, or region-specific prefixes. Always rely on the official catalog or dealer system for the exact format that applies to your model and region.
Where to find the OEM part number
Use these common sources to locate the number printed or labeled on components, packaging, or documentation.
- On the part itself: look for markings such as "OEM Part," "Part No.," "P/N," or a stamped/laser-etched code. Check multiple surfaces if the part is large or has hidden edges.
- On the original packaging: a label with the part number, barcodes, and vendor codes is usually printed on the box or bag.
- In the product listing or service manual for your vehicle or equipment: diagrams and parts lists specify the OEM number for each component.
- In the owner’s manual or maintenance guide: some OEMs include replacement part numbers in recommended service sections.
- On the dealer invoice or parts catalog (online or print): the exact OEM number is shown for your model during purchase.
- Using VIN-based or model-specific lookup tools: many manufacturers provide online lookups that display compatible OEM numbers for a given VIN or configuration.
Cross-checking these sources helps confirm you have the exact OEM part number. If you encounter multiple numbers, verify against the latest OEM catalogs or consult a dealer or technician.
How to verify the OEM part number
These steps guide you through a reliable verification process to minimize the risk of mismatches.
- Identify the exact application: note the year, make, model, engine type, trim level, and regional specification to pull the correct catalog entry.
- Inspect the current part for markings: check for "OEM," "Part No.," "P/N," and any prefixes/suffixes; write them down clearly.
- Look up the part in official catalogs or dealer lookup tools: search by model/VIN to retrieve the OEM number and any compatibility notes.
- Compare multiple sources: ensure the number on the current part, the new part’s label, and the catalog entry all match.
- Verify packaging and documentation: the replacement part’s packaging should bear the same OEM number found in the catalog, not just a generic listing.
- When uncertain, contact a dealer or the OEM’s technical support: provide photos of the old part, packaging, and vehicle details to confirm the correct number.
Following these steps reduces the odds of ordering the wrong part and helps ensure proper fit and performance.
Regional and category considerations
Automotive parts
Automotive OEM numbers often appear in formats that include regional codes or manufacturer prefixes. Always use the brand’s official parts catalog or a franchised dealer’s lookup tool to confirm the exact number for your locale and vehicle configuration.
Electronics and appliances
In electronics and appliances, OEM numbers are usually found on the device label or packaging. Verify against the manufacturer’s service portal or authorized parts distributors to confirm compatibility with your model and production year.
Summary
To check an OEM part number, locate the number on the part or its packaging, use official catalogs or dealer tools to confirm the listing, and cross-check across multiple sources (part itself, packaging, service manuals, and VIN/model lookups). If anything doesn’t align, contact the manufacturer or a authorized dealer for confirmation. Being meticulous about OEM numbers helps ensure proper fit, warranty eligibility, and reliable performance.
What does an OEM part number look like?
Every OEM auto part has a unique identification number, similar to an ID card. This OEM number is assigned by the original equipment manufacturer to precisely identify and differentiate specific parts . For example, the OEM part number 6L3Z-3280-B is suitable for the FORD F150 4WD model produced from 2004 to 2008.
How to find original GM part number?
You can find original GM part numbers by checking the part itself, using your VIN with an online parts finder, consulting your vehicle's owner's manual, or using a GM parts catalog. The most reliable method is to use your Vehicle Identification Number (VIN) on an official site like GMParts.com to ensure you find compatible parts for your specific vehicle. You can also check the existing part for a stamped number or look through the diagrams in your owner's manual.
Methods to find GM part numbers
- Check the part itself: Look for a number stamped, engraved, or printed directly on the physical part you are replacing.
- Use your VIN: Your Vehicle Identification Number (VIN) is the most precise way to find correct parts. Enter it into a VIN search tool on an official GM parts website to see a list of compatible components for your specific vehicle.
- Consult your vehicle's owner's manual: Your owner's manual often contains a list of parts, along with their corresponding numbers, for key components.
- Use a GM parts catalog: Websites like GMParts.com offer online parts catalogs where you can either search by your vehicle model or by part number.
- Look at the RPO codes: Your vehicle's Regular Production Option (RPO) codes, found on a sticker in the glove box, trunk, or door jamb, can be used with online decoders to determine which parts your vehicle was originally built with.
- Use online resources: Some websites, like the GM Parts Wiki, have digitized parts catalogs that can be searched by part number or RPO code, but it's important to note the publication date of the information.
How to check if a part is OEM?
To tell if a part is OEM, check for the manufacturer's logo or part number directly on the component, inspect the branded packaging for proper logos and holograms, and compare the part's quality, fit, and finish against a genuine part. Purchasing from authorized dealerships or retailers, using a unique part number for verification, and being wary of unusually low prices can also confirm authenticity.
On the part itself
- Look for the logo: Genuine OEM parts will have the car manufacturer's logo or their parts division's logo (like Mopar for Jeep/Ram).
- Check the part number: Look for a specific OEM part number stamped or cast into the metal, often with a corresponding part number and description on the packaging.
- Inspect the quality: Compare the part's finish, materials, and weight to a genuine part. Counterfeit parts may have slight but noticeable differences in color, finish, or construction.
- Verify security features: Some parts have unique security features like QR codes or data matrix codes that can be scanned to verify authenticity on the manufacturer's website.
On the packaging
- Check the branding: The packaging should clearly show the vehicle manufacturer's brand, or the brand of their official parts division.
- Look for proper labels: Authentic packaging will have a proper serial number, barcode, and part details. Watch for a missing, blurred, or incorrect serial number or barcode, and check for missing holographic stickers.
- Compare packaging details: The font, colors, and overall quality of the packaging should match what you'd expect from a reputable company, as counterfeiters often make mistakes.
Other verification methods
- Know the source: Buy directly from the dealership or an authorized retailer. This is the most reliable way to ensure you receive a genuine part.
- Cross-reference the part number: Use the part number from the packaging or part itself to cross-reference with a parts catalog or your vehicle's owner's manual.
- Be suspicious of low prices: If the price seems too good to be true, it probably is. Genuine OEM parts are typically more expensive than aftermarket alternatives.
How to look up manufacturer part number?
To find a manufacturer part number, check the physical part itself for stamps, engravings, or stickers, as well as the product packaging or manual. If you can't find it on the part or packaging, you can search online using the product's model, serial number, or the Vehicle Identification Number (VIN) for a car. You can also contact the manufacturer, the dealership's parts department, or a local auto parts store for assistance.
On the product or its packaging
- Inspect the physical part: Look for a number etched, stamped, or printed directly on the item. Use a flashlight to help read any markings, especially in hard-to-see areas like the back or bottom.
- Check stickers and labels: The part number may be on a sticker on the product itself.
- Examine the packaging: The part number is often printed on the original box or a label attached to it.
- Consult the instruction manual: Look for the part number in the product's instruction or user manual.
Online resources and databases
- Use search engines: If you know the product name and model, you can search online. If it's a vehicle part, using the VIN can be the most accurate way to find the correct number.
- Visit the manufacturer's website: Many manufacturers list their part numbers on their websites.
- Check online retailers: Websites like Amazon often have features to help identify the correct part number based on your product's details.
- Use barcode lookup apps: Apps like the one from Barcode Lookup can scan a product's barcode to provide information, including the manufacturer part number.
Third-party assistance
- Contact the manufacturer: The manufacturer's customer support can help you identify the part number.
- Go to a dealership: For vehicle parts, the dealership's parts department can help you find the correct MPN, often using your VIN.
- Ask a local auto parts store: Staff at these stores can assist in identifying the correct part number for your vehicle.
