Use Mobil 1's online filter finder or your vehicle's year, make, and model to locate the correct part number
Mobil 1 makes dozens of filter models, and using the wrong one can reduce oil flow or cause fit problems. The fastest way to find yours is through Mobil's official filter lookup tool on their website — you enter your vehicle's year, make, model, and engine size, and it returns the exact Mobil 1 filter part number you need. If you prefer not to use the online tool, you can also call a Mobil 1 customer service line or visit an auto parts retailer and provide the same vehicle information.
The part number matters because Mobil 1 filters come in different thread sizes, bypass valve settings, and canister diameters. A filter that looks similar but has a different part number may not seal properly on your engine, or it may have a bypass valve set for a different oil viscosity. Using the wrong filter can lead to oil leaks, inadequate filtration, or engine damage over time.
Key Takeaways
- Mobil 1's online filter finder at their website is the most direct way to get your correct part number without leaving home.
- You will need your vehicle's year, make, model, and engine size — information found on your registration or in your owner's manual.
- Auto parts retailers like AutoZone, O'Reilly, and NAPA can also look up your filter if you provide the same vehicle details in person or by phone.
- The part number is specific to your engine's thread size and bypass valve rating, so substituting a similar-looking filter can cause leaks or poor filtration.
Where to find your vehicle information before you search
Your vehicle registration card, driver's side door jamb, or owner's manual all display the year, make, model, and often the engine size. If you are unsure which engine you have — some models came with multiple options — the door jamb label is the most reliable source. It will show the engine displacement in liters or cubic inches.
If you cannot locate this information, your VIN (vehicle identification number) can be decoded to reveal engine details. The VIN appears on your registration, insurance card, and on the dashboard at the base of the windshield on the driver's side. Some auto parts retailers will decode your VIN for free if you call or visit in person.
How Mobil 1's online filter lookup works
Visit Mobil's official website and navigate to their filter finder tool. You will see dropdown menus for year, make, and model. Select your vehicle year first, then the manufacturer, then the specific model. After you select the model, the tool will ask for engine size if your vehicle had multiple engine options that year.
Once you submit this information, the tool displays your correct Mobil 1 filter part number, often with a photo of the filter and sometimes a link to retailers that stock it. Write down or screenshot the part number — this is what you will use when ordering online or asking a parts counter associate to locate it.
Comparing Mobil 1 filter types and what the part numbers mean
Mobil 1 produces several filter lines: the standard Mobil 1 filter, the Mobil 1 Extended Performance (which lasts longer between changes), and the Mobil 1 Synthetic High Mileage filter for older engines. The part number encodes the filter's physical dimensions and valve settings, not the brand or quality tier — so an M1-110 is not interchangeable with an M1-111 even though both are Mobil 1 products.
The first digits or letters in the part number often indicate the filter's thread size (the connection point on your engine). Common thread sizes are 3/4-16, 13/16-16, and M20x1.5. If you install a filter with the wrong thread size, it will either not fit at all or will leak oil. The lookup tool ensures you get the right thread size for your specific engine.
Ordering or purchasing your Mobil 1 filter
Once you have the part number, you can order online from retailers like Amazon, Walmart, or specialty auto parts sites. Many retailers offer same-day or next-day delivery. You can also visit a local auto parts store — AutoZone, O'Reilly, NAPA, and Advance Auto Parts all stock Mobil 1 filters and can check inventory by part number before you drive there.
Prices for Mobil 1 filters typically range depending on the filter type and your location, but the part number you found through the lookup tool will be the same price across retailers. Some auto parts stores offer loyalty discounts or sales on filters, so it is worth checking their websites or calling ahead if you are price-sensitive.
What to do if the lookup tool shows no results
If Mobil 1's filter finder returns no results, double-check that you entered the year, make, and model correctly. Some vehicles, particularly older models or specialty vehicles, may not have a Mobil 1 filter available. In that case, you can contact Mobil 1 customer service directly — they can confirm whether a filter exists for your vehicle and suggest alternatives.
If Mobil 1 does not make a filter for your engine, you will need to use a filter from another manufacturer. Your owner's manual will specify the filter type your engine requires, and any major filter brand (Fram, Purolator, ACDelco, or Bosch) will have a lookup tool similar to Mobil 1's. The important thing is matching the thread size and bypass valve rating, not the brand.
Frequently Asked Questions
Can I use a Mobil 1 filter if my car's manual recommends a different brand?
Yes, as long as the Mobil 1 filter has the same thread size and bypass valve rating as the filter your manual specifies. The part number lookup tool will show you a Mobil 1 filter designed for your engine. Different brands are interchangeable if they meet the same specifications — the brand itself does not matter, only the fit and valve settings.
What if I have the part number but cannot find it in stock anywhere?
Call Mobil 1 customer service or check their website for a list of authorized retailers. Some part numbers are region-specific or may be temporarily out of stock. You can also ask an auto parts store if they can special-order it — most can within a few days. If the part number is truly unavailable, Mobil 1 can tell you which alternative Mobil 1 filter is compatible with your engine.
Does the Mobil 1 filter lookup tool work for motorcycles or small engines?
Mobil 1 makes filters for some motorcycles and small engines, but their main lookup tool is designed for cars and light trucks. If you have a motorcycle or lawn equipment, contact Mobil 1 directly with your engine size and model, or check the equipment manufacturer's manual for the correct filter specification.
How do I know if I am looking at the right part number when I get to the store?
The part number on the filter box must match exactly what the lookup tool gave you. The box will also display the thread size and sometimes the bypass valve pressure rating. If the part number does not match, ask the store associate to verify — they can scan the barcode or look it up in their system to confirm it is the correct filter for your vehicle.