I want to improve cooling on my JK diesel. Some people in Gernany complained about high temperaturs during hauling and or warm weather.

To be on the safe side I would like to chanfe the stock fan.
From the data I found it looks like a Flexalit 398 16" syclone fan would fit in the stock shroud make almost double the air flow and is ok with the power draw.
So it seems to be an easy and cheap fix.

But I didn't find any info if the fan is 100% waterproof.
Spal has a IP68 rating. I can't find anything about Flexalite.

Anyond has further infos or knows what fan would be perfect ?
The biggest Spal one makes much less air flow.