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Holes in Air Cleaner Housing

The air cleaner filter housing on the 4.0 L V6 Petrol Prado engine has two small holes on the lower entry side of the air cleaner element. If entering deep water such as a river crossing, the two holes will will allow water to enter the air filter element and potentially allow water to be drawn into the engine.

These two holes are primarily used to drain water, however in the case where the water is deep, the opposite will happen.

It would be wise to familiarize yourselves with these holes and be prepared with rubber bungs to plug them should the need arise. In normal driving however, the holes should be open. They are there for a valid reason.

Two holes shown above


Left side hole shown above


Right side hole shown above


A fine wire mesh is positioned downstream of the air filter element.


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