Air Filter for 5 HP and 5.5 HP Vector Series and 5 HP and 6 HP XL Series Vertical Shaft Engines. Air Filter Dimensions: 3-3/8" x 3-3/4" x 1-1/4" Item: TAF-124 O.E. Replacement Part Number: 36046 , 30-740 , 100-450 , 100-483 , B1SB8330 , 8330