1 Buy = 2 Pondmaster Replacement Impellers! The Pondmaster Impeller Replacement will get your pump back to operating at max flow capacity. This particular impeller is specifically Designed for Model 7 Pondmaster Pumps (02517 & 02527), and is black in color. The Pondmaster Impeller Replacement is one of many Pondmaster products offered by VMInnovations. Pondmaster products have been designed and manufactured to meet the demanding requirements of pond hobbyists and professionals everywhere. Fish friendly, environmentally sound and energy efficient. VMInnovations is an authorized Pondmaster dealer!