AIR filter (MZA) - Simson Note.: Tuning air filter for Simson S50, S51, S70. Air outlet is 10cm in diameter. Special filter mat consists of 2 layers, a coarse protective filter layer and a fine protective filter layer. To clean the filter mat you can use normal household cleaner. It should be noted that after cleaning, allow the filter mat to dry completely and then use filter oil. The