Okay, I see you have two posts going about a coolant filter and air dryer. That's your air dryer in the photo you posted. Your engine is an ISL, not an ISM. They discontinued the ISM engine. Your coach doesn't use a coolant filter.
Make sure you dump your air and drain your air tanks before you try and remove the air dryer. Three years is a good change interval for the air dryer.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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