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Motorcraft Filter Interchange

Discussion in 'Under the Hood' started by RickOTR, December 28, 2017.

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    1. RickOTR

      RickOTR Active Member

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      Does anyone know if there is a difference between a Motorcraft FL-1A oil filter vs FL-400s filter. I've been doing a lot of research and people say the FL-400S is a much better filter. It's getting almost impossible to find a FL-1A but there are a lot of FL-400S filters out there. I have the 4.0L SOHC.
       
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    3. Roadrunner777

      Roadrunner777 Well-Known Member

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      I did a TON of filter research, and I like Baldwin filters. If you open the hood of a big-rig, you will most likely find a Baldwin. The crossover from the Motorcraft FL-1A is the Baldwin B2.

      But... I actually run a Baldwin BT251 instead. Why? It's the same filter, but about 2" longer. In my '94 Explorer, the extra length actually makes it easier to change, and the extra oil capacity (about 1/2 quart) helps cooling. The extra media in the filter is a happy bonus. It would be overkill to a lot of people, but it's the best commonly available filter out there. Now, you may not have the clearance on your newer Explorer, I don't know, then I'd stay with the B2. The B2 is sold on Amazon for $8.00. The BT251, around $11.
       
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    4. roscoe 0202

      roscoe 0202 Elite Explorer

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      the new filter has metric threads the old fl-1a has uss threads.
      roscoe
      ps my sohc has the metric thread
       
    5. swshawaii

      swshawaii Explorer Addict

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      ^ You're mistaking the standard thread FL-1A vs. metric FL-820S (22mm). FL-1A and FL-400S are both 3/4-16.
       
    6. roscoe 0202

      roscoe 0202 Elite Explorer

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      like I said learn something new every day
      roscoe
       
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