The air filters MARCHALD FILTERS for four-wheel drive vehicles are made of expanded polyurethane with filtering capacity, a material originating in the world of motocross. The outstanding quality of the filters is that the foam part can be completely removed, cleaned for several times and then replaced, once it is worn out.
This creates a new mentality in the user: the air filter becomes a highly technical component and users obtain a remarkable increase in performance, as well as a radical improvement of safety and engine life, in exchange for correct maintenance.
Since it is possible to clean and replace just the foam part of the filter whilst keeping the same supporting structure, this product offers considerable cost savings in comparison to expensive traditional disposable paper filters.
The air filters MARCHALD FILTERS are sold in a kit containing the complete air filter with supporting structure and foam part, already oiled and ready to use, as well as a small bottle of filter oil; that way users can get familiar with the maintenance of the product.
After using the product on their own 4WD and appreciating the remarkable increase in air flow (about 8-10%) and, consequentially, engine performance, users will have to remove and clean the foam part of the air filter, either with petrol or with the product “SOAP for MARCHALD FILTERS”. Once dry, the foam part needs to be oiled neatly with “OIL FOR MARCHALD FILTERS” and then left to dry again. After that it is again ready to use.