This genuine Zetor complete air filter set includes the outer air filter (part number 18011914) and the inner air filter (part number 18011915). Designed for optimal engine protection and performance in Zetor Forterra and Proxima series tractors. The outer filter measures approximately 340 mm in height and 180 mm in outer diameter, while the inner filter is approximately 330 mm in height and 90 mm in outer diameter. This set ensures clean air intake, preventing contaminants from reaching the engine and maintaining efficient operation.