− Decrease quantity for Air Filter Element, High-Flow, Oiled, Cotton Gauze, Red, Round, 5.31 in. Outside Diameter, 4.06 in. Inside Diameter, 2.38 in. Tall, Universal, Each Quantity + Increase quantity for Air Filter Element, High-Flow, Oiled, Cotton Gauze, Red, Round, 5.31 in. Outside Diameter, 4.06 in. Inside Diameter, 2.38 in. Tall, Universal, Each Add to cart