The Motorcraft FL1A oil filter is one of the most widely used spin-on filters in automotive history. It fits many Ford, Chrysler, Toyota, and industrial engines and is often cross-referenced with dozens of equivalent filters from major brands.
This guide provides a comprehensive FL1A oil filter cross reference table to help you find compatible replacements across multiple manufacturers.
FL1A Oil Filter Cross Reference
| Brand | FL1A Equivalent Part Number(s) |
|---|---|
| Motorcraft | FL1A, CM-6731-FL1A, AFL-1 |
| FRAM | PH8A, TG8A, XG8A, DG8A, DL8A |
| WIX | 51515, 51515XP |
| NAPA Gold | 1515 |
| Purolator | L30001, PL30001, TL30001, PBL30001, TL30001BP |
| Baldwin | B2, B2-HPG |
| Fleetguard | LF3313 |
| Donaldson | P550008, P172525 |
| ACDelco | PF2, PF1A, PF20, PF56, PF2217, HD222 |
| Bosch | 3500, 72102, 72185 |
| K&N | HP-3001 |
| STP | S8A |
| Luber-Finer | PH8A |
| Premium Guard | PG1A |
| EcoGard | X1A |
| Mahle | OC67, OC706, OC1668 |
| Knecht | OC67 |
| Mann-Filter | W940/4, W940/1 |
| Magneti Marelli | 154078228510 |
| Lucas Filters | LFOS163 |
| Misfat | Z256 |
| Mecafilter | ELH4321 |
| CoopersFiaam | FT4403 |
| FIAAM | FT4403 |
| Good Will | OG117, OG117HQ, OG214, OG214HQ |
| PBR | BC-1336 |
| Sakura | C-1910 |
| Patron | PF4051 |
| Ryco | Z9 |
| Carquest | 85515, 85622, 185515 |
| Big A | 92622 |
| Beck/Arnley | 041-8144 |
| Case IH | 3217449R91 |
| New Holland | 86546614 |
| Hino | 15607-2050 |
| Toyota Diesel | 15601-13011 |
| Ram | 4892339AA |
| Mercedes-Benz | 1021800009 |
| Allis-Chalmers | 0237000, 02325784 |
| Alliance | ABP-N10G-LF3313 |
| Alco Filters | SP920 |
Related Oil Filter Thread Size Chart(For All Thread Size/Pitch)
How to Verify a Cross Reference
Before installing any cross-referenced filter:
- Confirm thread size (3/4-16).
- Check gasket diameter and sealing surface.
- Ensure proper clearance in the engine bay.
- Verify bypass valve pressure compatibility.
Even if a filter cross-references, vehicle-specific requirements must always be checked.
Vehicles & Applications That Commonly Use FL1A
The FL1A filter is used across many platforms, including:
- Ford Crown Victoria
- Ford Bronco
- Classic Ford V8 engines
- Some Toyota diesel engines
- Hino industrial engines
- Agricultural equipment (John Deere, Case, Caterpillar)
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Why the FL1A Is So Popular
1. Wide Compatibility
Its standardized size and thread make it suitable for numerous engines.
2. High Oil Capacity
The larger canister design allows improved filtration and longer service intervals.
3. Easy Availability
Most auto parts stores worldwide stock an equivalent.
FL1A vs PH8A: Are They the Same?
Yes – the FRAM PH8A is the most common equivalent and is widely accepted as a direct replacement for FL1A. However, premium versions (such as synthetic media filters) may offer improved filtration and durability.
Related Exmark Oil Filter Cross Reference(for All Brands)
What Is the FL1A Oil Filter?
The FL1A is a full-flow spin-on oil filter with a 3/4-16 thread, approximately 3.7 inches in diameter, and about 5.4 inches long, making it suitable for many gasoline engines and light-duty trucks.
Common Uses
- Ford V8 engines
- Classic cars and trucks
- Industrial equipment
- Agricultural machinery
Tips for Choosing the Best Equivalent
- Use OEM or premium brands for extended oil change intervals.
- For classic vehicles, choose filters with anti-drainback valves.
- For heavy-duty use, consider high-capacity filters like Baldwin B2.
Related Hydraulic Oil Filter Cross Reference Chart(For All Brands)
FAQs
What is the WIX equivalent of FL1A?
The WIX 51515 is the direct equivalent to the Motorcraft FL1A oil filter. WIX also offers a premium extended-performance version, the 51515XP, which provides enhanced filtration and longer service intervals.
What is the diameter of the FL1A?
The Motorcraft FL1A oil filter has an approximate outside diameter of 3.66 to 3.78 inches (about 93–96 mm). This size allows for higher oil capacity and improved filtration compared to smaller spin-on filters.
What vehicle does Mobil 1 M1-201A fit?
The Mobil 1 M1-201A fits many Ford vehicles and other models that use the FL1A-style filter. Common applications include:
- Ford Crown Victoria
- Ford F-150 (older V8 models)
- Ford Bronco
- Classic Ford small-block V8 engines
Always confirm fitment with your vehicle’s manual.
What does a WIX 10255 oil filter fit?
The WIX 10255 is a cartridge-style oil filter used in select modern Ford engines, particularly:
- Ford Power Stroke diesel engines
- Some Ford Super Duty trucks
- Newer Ford diesel applications
It is not a spin-on filter like the FL1A and is not interchangeable with it.
What size thread is a Motorcraft FL1A?
The Motorcraft FL1A uses a 3/4-16 UNF thread size, which is one of the most common oil filter thread standards. This standardized threading is a key reason the FL1A has so many cross-reference equivalents across different brands.
Final Thoughts
The Motorcraft FL1A oil filter remains a benchmark in oil filtration due to its durability, compatibility, and availability. With many cross-referenced equivalents from major manufacturers, finding a replacement is easy, but verifying specifications is essential for safe and optimal engine performance.
