On 2008 evos there are vents in front fender liner so air from oil and sst coolers can escape. Direction of vents is improper so all mud from wheel flies on coolers
AFAIK on 2010+ evos there are upgraded oem front fender liners with some of the vents closed and with changed direction, so coolers can stay clean. Does anyone know part number for new liner?

 

You are right on the upgrades fender liners on the 2010s. I cannot remember the part number however, call lancershop up and even order it from them as they are cheap and accurate on items.

 

http://www.mitsubishiparts.net/catalog/?section=1069

 

I can order liner in my home country
I just don't know part number for upgraded one.
Meanwhile rear of my engine oil cooler is fully covered in dirt...

 

It does say partnumber 5370A386. But are those 2008 or 2010+ fender liners?

 

No clue.

 

any pics

 

Your oil cooler might be better as dirty but cooler as opposed to clean but with less air traveling over it.

 

Right now no air at all travels through my oil cooler because all fins are filled with dirt. I unplugged and washed entire cooler 1 month ago... Regular washing will not help, because anyway cooler gets trashed with all mud and dirt from wheel.

 

Got it, well then I agree, a solution is needed. I have no fender liners at all, but for the cooler I covered it in a plastic mesh to protect it from debris. I never see dirt on the track (unless I go off!!) so it is less of an issue.