Used on Onan MDKC (3.5 & 4.0KW) and Onan MDKD (6.5 & 8.0KW) -with Oberdorfer Pump. For Onan MDKC (3.5 & 4.0KW) and Onan MDKD (6.5 & 8.0KW) with Sherwood Pump, use AN 4988. Used on Universal / Kubota engines M12 (Kubota Z-500) M18 (Kubota Z-400), M30 (Kubota D1101 D1102) & M50 (Kubota V-1902). Replaces Impellers - Onan 132-0316 132-0282 ; Oberdorfer 6593, Westerbeke 295628, JMP 7054 Used on Oberdorfer pump with Onan pump number 132-0277; Oberdorfer pumps 202M-11; N202M03, N202M7, N202M11, N202M15 and N202M16. Onan Impeller 1320277 Impeller Specifications: A= 51mm, B= 22mm, D= 12.7mm Shaft Type= Single Flat Type Impeller Rubber Material - Neoprene Number of Blades – 6 This impeller has 6 blades. For a 10 blade version, use JMP 7072 Impeller kit includes lubricant and a range of cover plate gaskets and o-rings to suit most applications.