Universal super power flow Air Filter 51 59 40 Neck: 18mm High Quality Auto Air Intake Filter. Universal fits for Vehicles with 18mm Air Intakes. 1 x 18mm Air Filter. In the course of the engine to be sucked into a lot of air, if the air without filtration, dust suspended in the air is sucked into the cylinder, it will accelerate the piston assembly and cylinder wear.
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