What a FRAM cross reference does

A FRAM cross reference is a tool that matches a FRAM oil filter part number to filters made by other brands that will work in your vehicle. FRAM is one of the largest oil filter manufacturers in North America, but many people own vehicles and want to know what other options exist — whether for cost, availability, or personal preference. A cross reference tells you which competitor filters have the same internal design and will fit your engine.

The cross reference works in both directions. You can start with a FRAM part number and find equivalent filters from Mobil, Motorcraft, Purolator, or other makers. Or you can start with a filter you already own and find its FRAM equivalent. This matters because oil filters that cross-reference to each other have the same thread size, bypass valve pressure, and filter media — the parts that actually determine whether a filter will work safely in your engine.

Key Takeaways

  • FRAM cross references match filters by their internal specifications, not just their appearance, so a cross-referenced filter will have the same thread size and bypass pressure as the original.
  • You can find cross references through FRAM's official website, through competitor brand websites, or through automotive parts retailers like AutoZone and O'Reilly.
  • The part number on your current filter or in your owner's manual is the starting point for any cross reference search.
  • Cross-referenced filters are not interchangeable with filters that merely look similar — the internal design is what matters for engine safety.

Where to find FRAM cross references online

FRAM publishes a searchable cross reference tool on its official website. You enter your vehicle's year, make, and model, and the tool returns the correct FRAM part number along with cross references to other major brands. This is the most direct route because FRAM maintains the data themselves and updates it regularly.

Automotive parts retailers also maintain cross reference databases. AutoZone, O'Reilly Auto Parts, and Advance Auto Parts all allow you to search by vehicle or by part number and will show you equivalent filters from multiple brands side by side. These retailers have financial incentive to keep their data current because they sell filters from all the major manufacturers.

If you already own a filter and want to find its cross references, look at the part number printed on the filter itself. That number is your entry point into any cross reference system. Write it down exactly as it appears — FRAM numbers often include letters and numbers in a specific sequence, and a single digit wrong will return no results.

How to read a FRAM part number

FRAM part numbers follow a pattern that tells you something about the filter's size and process. A typical FRAM number looks like PH3506 or TG3614. The letters at the start indicate the filter type — PH means passenger car, TG means truck or SUV, and so on. The numbers that follow indicate the filter's physical dimensions and thread size.

You do not need to decode the number yourself. The point is that when you enter this number into a cross reference tool, the system matches it against filters with identical internal specifications from other makers. Two filters with different part numbers can still be cross-referenced to each other if they have the same thread pitch, bypass valve setting, and media construction.

What specifications matter when cross-referencing

Three internal specifications determine whether a filter will work in your engine: thread size, bypass valve pressure, and filter media type. Thread size is the diameter and pitch of the threads that screw the filter onto your engine. If the thread size is wrong, the filter will not screw on at all. Bypass valve pressure is the point at which the filter allows unfiltered oil to flow through if the filter becomes clogged — this pressure varies by engine design, and using a filter with the wrong bypass pressure can damage your engine or starve it of oil.

Filter media is the material inside the filter that traps particles. Different engines need different media types depending on oil viscosity and engine design. A cross reference guarantees that all three of these specifications match, which is why a cross-referenced filter from another brand is safe to use.

The filter's external appearance — its height, its color, or the shape of its cap — does not matter. Two filters that look completely different can be cross-referenced to each other if their internal specifications are identical.

Using a cross reference to compare prices

Once you know which filters cross-reference to each other, you can compare prices across brands and retailers. FRAM filters are widely available and competitively priced, but in some cases a cross-referenced filter from Mobil, Purolator, or a store brand may cost less. Because the internal specifications are identical, the cheaper filter will perform the same job.

Price comparison is especially useful if you buy oil filters in bulk or if you maintain multiple vehicles. You might find that one brand is consistently cheaper at your local retailer, or that a store brand filter meets your needs at a lower cost than a name brand. The cross reference lets you make that choice with confidence that you are not sacrificing safety or performance.

What to do if you cannot find a cross reference

If you search for a FRAM part number and find no cross references, the most likely explanation is that you entered the number incorrectly. Double-check the part number on the filter or in your owner's manual and try again. Part numbers are case-sensitive and must be exact.

If the number is correct and still returns no results, the filter may be a regional or discontinued model. In that case, search by your vehicle's year, make, and model instead of by part number. This will show you the current FRAM filter for your vehicle, and from there you can find cross references to other brands. Your vehicle's current filter may not be the same part number as an older filter you once owned, but it will work the same way.

Frequently Asked Questions

Can I use a cross-referenced filter from a different brand without voiding my warranty?

Yes. Manufacturers cannot require you to use a specific brand of filter as long as the replacement filter meets the vehicle's specifications. A cross-referenced filter meets those specifications by definition. Keep your receipt as proof that you used the correct filter type.

Is a store brand filter as good as FRAM if they cross-reference to each other?

If they cross-reference, they have identical internal specifications and will perform the same job. The difference is usually in the external housing quality and the brand's warranty. FRAM and major brands like Mobil often offer longer warranties, but the actual filtration performance is the same.

What if my vehicle's manual says to use a specific FRAM number but I want to use a different brand?

Use the FRAM number as your starting point in a cross reference tool. The tool will show you which other brands' filters have the same internal specifications. Any of those filters will work safely in your vehicle, even though your manual names only the FRAM part.

Do I need to change my oil more often if I use a cross-referenced filter from a cheaper brand?

No. If the filters cross-reference, they have the same filter media and bypass valve, so they will last the same length of time. Change your oil on the schedule your owner's manual recommends, regardless of which brand of filter you use.

Can I cross-reference a filter I bought five years ago to find a current equivalent?

Yes, but the current equivalent may have a different part number. Enter the old part number into a cross reference tool, and it will show you equivalent filters from that time period. Then search by your vehicle's year, make, and model to find the current FRAM filter, which may have a newer part number but the same internal specifications.