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Discussion Starter · #1 ·
Hey all-

I've got a marinized 4BT3.9 that I'd like to drop into a boat that I'm working on. The motor has no air filter or filter housing.
I'd like something as low as possible as the engine compartment is tight. What are my options? Thanks in advance.
 

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Discussion Starter · #3 · (Edited)
Thanks! This is exactly the info that I was looking for-
One more question- any idea who might have Cummins factory parts for Cummins marine motors? I am specifically looking for the coolant pipe that runs beneath the heat exchanger. Photo of rusted unit attached- the part number is unavailable. Thanks again.
 

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Discussion Starter · #5 ·
...still needing a 3.9 air filter for a marine application.

Thanks- I still haven't purchased an air filter yet, the motor is in and the boat is in the harbor floating. I've been out for several shake down cruises and all is fine. I will need to install a filter SOON.
Does any one have experience with the LAF8672 made by Luber-Finer, or the Donaldson P537451? Thanks for reading this and relevant responses.
 
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