The utility model provides an air filter assembly, including air cleaner body (1), empty strain support (6) to and this internal filter core of filter. Support (6) hookup is strained through hoop (3) with empty in air cleaner body (1), and air cleaner body (1) air inlet arouses the union coupling through flexible rubber tube and T702 automobile body, and the gas outlet is connected the steel pipe that admits air and is admitted air for the engine provides, empty strain support (6) adopt the pipe fitting to bend to form, and including one mounting surface (7), this mounting surface is the foundry goods, fixes airfoil outside the frame with this mounting surface to contain connecting plate and mounting hole (5) on support upper portion, be used for the fixed pipe that arouses, be equipped with mounting hole everywhere in (9) simultaneously, be used for assembling the fender support. The utility model discloses simple structure is compact, and the hookup is reliable reasonable, and the filter effect is good, adapts to special operating mode work, and the T702 automobile body that satisfies fine moreover matches the requirement.