Engines with Filters-

Engine Wartsila 8L32

The original filter is a simple cloth wrap held in place with velcro strips. The velocity of the air passing through is great enough to pull all the pollutants straight through.
“A state of the art turbocharger”, without an air filter, environmental statement?

Installation

The single piece filter fits over the outer housing diameter and against the larger inner housing diameter.
A laser cut steel ring is held in place by 8 studs with the holes accurately drilled and tapped in the outer periphery.