Works perfectly. First time MAX-PROP owner. It's installed on my '88 C&C 30 MKII that I bought used. My diesel mechanic did it for me last fall as part of the winterizing process. I decided to do it myself this year. The other important component is that I did all of the research, tech discussion and ordering process via a terrific fella on the Chat Function. He supplied the pn's (I also bought the tiny cotter pins) for me to look up and order. Excellent customer service and fulfillment!