Listing is for Liner / Wear ring ONLY Fits Only Aftermarket Wear ring housings with replaceable liners New Aftermarket Yamaha WaveRunner 800 1200 1300 PV 155 MM WEAR RING Liner Replacement Aftermarket Part that fits OEM Part Number: 66V-51312-01-94 Also Replaces Part Numbers: 66V-51312-00-94, 66V-51312-01-94, 66V-51312-02-94 New high performance replacement aftermarket molded wear ring liner, These are created as a replacement for Aftermarket wear rings housings for your Yamaha. The Yamaha wear rings tend to be faulty as the stainless steel sleeve swells binding the impeller from a full rotation locking your drive line. JSP wear rings/impeller housings are a great alternative to OEM Yamaha because they have a replaceable liner. If the liner wears or gets damaged - its easily replaced and inexpensive. The OEM Yamaha housings do not have a replaceable liner and a entire new unit must be purchased. This is a quality AFTERMARKET replacement for Yamaha part numbers 66V-51312-00-94, 66V-51312-01-94, 66V-51312-02-94. Please ensure your model and year Yamaha PERSONAL WATERCRAFT / PWC is listed below for proper fit Fits: Yamaha 800/1200/ All 4 Str. PWC/Jetboat Model. Year: 99 & later