JMP Flexible & Bronze Impellers. Replacements for Jabsco, Johnson, Sherwood, Volvo Penta, Yanmar, Indmar, Doosan, Westerbeke, Kohler, Perkins, Sierra, Northern Lights, Onan, Caterpillar (CAT), Detroit Diesel (DDC), MTU2000, Cummins, John Deere, & More! These High Quality & Performance Impellers are also found in all JMP pumps. JMP Impellers provide you with the performance your engines require with the longer lasting quality we all desire. Once you use JMP products you wont want to use any other Brand.