Mobil 1 Oil Filter Cross Reference (M1 Series Guide)
A Mobil 1 oil filter number is a letter-and-number code plus an A suffix. M1-110A and M1-301A are both current filters, and the digits after the dash identify the physical filter the same way they do on FRAM or WIX. M1-110A crosses to FRAM PH7317, WIX 51356, and Purolator L14610.
That single rule gets you most of the way through a Mobil 1 cross reference. The rest of this guide covers what the A suffix actually changes, a verified chart across the major spin-on and cartridge sizes, who currently builds these filters, and the one gap in Mobil's own published data that most competing charts paper over with an invented number.
What Do Mobil 1 Oil Filter Part Numbers Mean?
Every current Mobil 1 spin-on filter carries an M1 prefix, a series number, and an A suffix: M1-110A, M1-301A, M1-212A.
Mobil groups its spin-on filters into five series printed directly on its own product listing page: 100 series, 200 series, 300 series, 400 series, and 600 series. Cartridge filters use a separate M1C prefix with their own 100 through 600 series numbering.
The series number identifies the physical filter: its thread size, gasket diameter, canister height, and bypass valve setting. Two filters in the same series number are the same physical part regardless of what letter comes before the digits.
What does the A suffix mean on a Mobil 1 filter?
The A suffix marks the current design, rated for 25,000 miles or one year, whichever comes first, when paired with full synthetic oil.
Mobil's own current filter warranty page states this distinction directly, warranting filters without the A suffix for 40,000 kilometers and filters with the A suffix for 25,000 miles, both up to one year, when combined with full synthetic oil.
Mobil's current catalog lists every spin-on and cartridge filter with the A suffix attached. If you find an older listing showing a plain M1-110 with no letter, it is describing the discontinued predecessor to the M1-110A, not a different filter for a different vehicle.
Does the number after M1 identify the filter across brands?
Yes. The digits are the reliable part of a Mobil 1 number, the same way they are for FRAM or WIX.
K&N's own cross reference lookup, which returns a single K&N part per input, confirms this directly: search Mobil One M1110A and K&N returns SO-1010 as the single matching filter, and search M1104A and K&N returns HP-1004 and SO-1004 together, the same pairing K&N publishes for the FRAM PH3593A group.
If you know your Mobil 1 series number, you know which interchange group it sits in. The A suffix tells you the rated interval, not the fitment.
Mobil 1 Oil Filter Cross Reference Chart
Every row below is confirmed two ways: through K&N's own cross reference lookup tool, which returns one filter per part number rather than a merged list, and cross-checked against the FRAM, WIX, and Purolator groups already verified on this site's other cross reference guides.
| Mobil 1 | FRAM | WIX | Purolator | NAPA / OEM |
|---|---|---|---|---|
| M1-110A, M1-107A | PH7317 | 51356, 57055, 57356 | L14610 | NAPA 1356, Honda 15400PLMA02, Nissan 152089 |
| M1-104A | PH3593A | 51334, 51568 | L14459, L24458 | ACDelco PF1127, Honda 15400-PR3-004, Subaru 15208AA031 |
| M1-103A | PH4386 | 57145 | L14477 | NAPA 7145, Toyota Tundra/Sequoia/Land Cruiser |
| M1-301A, M1-302A | PH8A | 51515 | L30001 | NAPA 1515, ACDelco PF2 |
| M1-101A, M1-102A | PH3387A | 51040 | L10111 | NAPA 1040, ACDelco PF47, Suzuki 16510-84Z00 |
| M1C-251A | CH9972 | 57047 | L25608 | Toyota 04152-YZZA1 (cartridge) |
How to use this table: find your current Mobil 1 number on the left, then read across for the equivalent from your preferred brand. Confirm the result against the OEM number for your specific year and engine before buying, since several of these numbers sit inside wider interchange groups that also cover other vehicles.
The M1-212A is a merged group, not one filter
Mobil 1's M1-212A deserves its own callout because the group it sits in is unusually wide.
Third-party interchange data places the M1-212 group against FRAM PH10575 and PH2, WIX 51372 and 57502, and Purolator L22500 and L24651, spanning applications as different as the Ford 5.0 Coyote V8 and the Ford/Lincoln V6-V10 trucks that use the Motorcraft FL820S.
That is too broad a spread to treat as one physical filter. Use the OEM number on your old filter to confirm which sub-group applies before ordering, the same warning that applies to the wide FRAM PH6607 and K&N HP-2004 groups documented elsewhere on this site.
Who Makes Mobil 1 Oil Filters?
Highline Warren LLC is the current manufacturer and warrantor of Mobil 1 Extended Performance oil filters, as of February 1, 2025.
Highline Warren became the exclusive supplier of Mobil 1 filters in the US and Canada, expanding an existing relationship with ExxonMobil. Mobil's own current filter warranty page confirms the change directly: Highline Warren LLC provides the limited warranty for Mobil 1 Extended Performance oil filter products it manufactures or sells.
Before that changeover, Mobil 1 filters were built by Champion Laboratories, Inc., a private-label filter manufacturer whose own warranty language on older filters named Champion Laboratories directly as the manufacturer. Owner forum consensus dates that Champion Laboratories relationship back to the original launch of the Extended Performance line.
If you are holding a box with older packaging or an unexpired warranty card naming Champion Laboratories, that is consistent with production before the 2025 changeover, not a sign of a counterfeit filter.
What Efficiency and Micron Rating Does Mobil 1 Publish?
Mobil 1 Extended Performance oil filters are rated 99% efficient at 30 microns, tested under ISO 4548-12.
Mobil states this directly on its oil filter product page: "99% at 30 microns designed to capture more contaminants and protect your engine longer," measured against a USCAR minimum standard of 95%.
Mobil does not publish a separate, smaller-micron efficiency figure the way some competitors publish a two-tier spec. The 30-micron number is the only efficiency rating on Mobil's current product page, so this article does not state a finer number that Mobil itself has not published.
Other specs Mobil publishes on the same page:
- Capacity: built for a 25,000-mile drain interval without compromising flow, per Mobil's own product copy
- Burst strength: described as the highest PSI rating for spin-on filters in the automotive industry, tested under ISO 4548-6, though Mobil does not publish the specific PSI figure on the consumer product page
- Construction: steel center tube, synthetic fiber media blend, silicone-free nitrile gasket, and an anti-drainback valve
Mobil's testing methodology note specifies that the burst and efficiency figures come from testing the M1-113A specifically against "comparable standard and OE filters," meaning the number represents that one filter's test result rather than a guarantee identical across every series and size in the line.
Is Mobil 1 a Full Synthetic Filter Media?
Mobil 1 Extended Performance filters use synthetic fiber media, described by Mobil as a synthetic blend rather than 100% synthetic glass fiber.
This distinction matters if you are comparing Mobil 1 against filters that market themselves as full synthetic, such as Purolator Boss or Royal Purple Extended Life. Mobil's own construction description lists "contains synthetic fibers" as one of five build features, alongside the steel center tube, heavy-duty canister, anti-drainback valve, and nitrile gasket. Nowhere on the current product page does Mobil claim 100% synthetic media.
That does not mean the filter underperforms. The 99% at 30 microns rating and the 25,000-mile capacity claim stand on their own regardless of whether the media is a blend or a pure synthetic weave. It does mean a side-by-side spec comparison against a filter marketed as full synthetic should compare the published efficiency numbers, not just the media description on the box.
Mobil 1 Spin-On vs. Cartridge Filters
Mobil 1 sells both spin-on canisters and metal-free cartridge elements, split across two separate numbering systems.
| Spin-On (M1 prefix) | Cartridge (M1C prefix) | |
|---|---|---|
| Series numbering | 100, 200, 300, 400, 600 | 100, 200, 300, 400, 600 |
| Housing | Disposable metal canister | Reusable plastic housing on the engine |
| Common applications | Domestic V6/V8, most Honda/Nissan/Subaru 4-cylinder | Toyota, many newer GM and European engines |
| Rated protection | 25,000 miles or 1 year with full synthetic oil | 25,000 miles or 1 year with full synthetic oil |
The rated interval is identical between the two body styles. Mobil applies the same 25,000-mile, ISO-tested standard to both the spin-on and cartridge Extended Performance lines rather than treating cartridges as a lesser product.
Cartridge filters like the M1C-251A fit inside a permanent oil filter housing on the engine, so replacement means pulling the housing cap, discarding only the element and its O-rings, and reusing the housing itself. A spin-on filter like the M1-110A threads directly onto the engine block and the entire canister is discarded at each change.
What Vehicles Commonly Use Mobil 1 M1-110A and M1-301A?
The M1-110A group covers Honda, Nissan, and Subaru four-cylinder engines, since it crosses to the same FRAM PH7317 and WIX 51356 group used on the Honda Accord, Civic, and CR-V, and the Nissan Altima and Rogue.
The M1-301A group covers older domestic V8 applications. It crosses to FRAM PH8A and WIX 51515, a large and long-running interchange group that predates the Extended Performance line itself and still appears on classic and older domestic engines.
Confirm your specific application against the OEM part number stamped on your current filter or listed in your owner's manual before ordering. Both groups are wide enough that a series number alone is not a guarantee of fit across every model year.
FAQ
What does the A suffix mean on a Mobil 1 oil filter? The A suffix marks the current Mobil 1 Extended Performance filter design, rated for 25,000 miles or one year with full synthetic oil. Earlier filters without the A suffix were the previous design rated for a shorter interval. Current Mobil 1 catalog listings use the A suffix on every spin-on and cartridge filter.
What FRAM filter is equivalent to a Mobil 1 M1-110A? The M1-110A crosses to FRAM PH7317, WIX 51356 or 57356, and Purolator L14610, based on K&N's own cross reference lookup, which returns the K&N SO-1010 for this Mobil 1 number. This group commonly covers Honda, Nissan, and Subaru four-cylinder applications, but confirm against your OEM number before buying.
Who currently manufactures Mobil 1 oil filters? Highline Warren LLC has been the exclusive manufacturer and warrantor of Mobil 1 Extended Performance oil filters in the US and Canada since February 1, 2025. Champion Laboratories, Inc. built the filters before that changeover. A filter box or warranty card naming either company reflects when it was produced, not a difference in quality.
Does Mobil 1 publish a micron rating below 30 microns? No. Mobil's current oil filter product page states one efficiency figure, 99% at 30 microns tested under ISO 4548-12, benchmarked against a 95% USCAR minimum. Mobil does not publish a separate rating at a finer micron size, so treat any chart quoting a smaller number for Mobil 1 as unconfirmed.
What to Do Next
A cross reference confirms that a filter will physically fit. Whether it is the right filter for your oil change interval depends on the drain interval you are actually running and how it compares to Mobil's published 25,000-mile rating.
