Q: What is the inside diameter of the impeller in this kit. Thanks in advance. 1 Answer 0 Diego Mori - 28 September 2026 Hi, we cannot provide the ID however if you send us your Mercury serial number, we can verify fitment. Your Answer Please try to give a substantial answer. Please remember that you can always revise your answers - no need to answer the same question twice. Also, please don't forget to vote - it really helps to select the best answers! Post Answer Discard