The most important objective of the air filter in dusty engine wear adequate protection against any possible way to guarantee the protection. Adequency of seperation must comply with the filter dust. The most important part of the air filter from the filter elements in high-grade cellulose fibers. Panel and round type air filter is another important element, the polyurethane filters. Showing very little resistance to air flow air filters micronic the smallest amount of dust. Small and lightweight heavy-duty engines, especially in working environments, business machnes, air filters used in multi-Tolu. These filters have the tools with powerful engines to be affected by dust to the air combustion efficiency of the system does not create the problem by keeping the vehicle operating conditions.