Yep, those are both QSB of some rating. Common rail. At rating of 380, they are a very nice engine.
Twin filters are nice to have. Easy switch if one gets cloggy. On my personal boat I run a single and it has not caused me any issues. I can hear the engine rpm wavering a tiny bit when it gets cloggy, I can run over an hour and it only gets a tiny bit worse. So gives me plenty of time to get to a good spot to change it.
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