AD 33018851 LPG / Gasoline engine oil filter for Nilfisk Advance sweepers. A cylindrical spin-on engine oil filter for 3-cylinder Kubota engines found in the Nilfisk Advance Proterra sweepers equipped with the 3-cylinder LPG and Gasoline engines. Does not fit Proterra models equipped with the Kubota diesel engines (Diesel models require AD 33018850 oil filter). One engine oil filter required per unit. Priced Each. Replaces Nilfisk Advance 330118851. Our Part Number AD 33018851