The WSM line of aluminum drive shaft couplings are machined to precise tolerances from strong, lightweight cast aluminum for strength and durability. Each coupling is designed to provide superior performance at an economical price. Some couplings may fit both the drive shaft and crankshaft ends. Check the matching chart to ensure proper fit. Check the thread size (if applicable) and replacement part number to ensure proper machine installation. Some couplings may fit both the drive shaft and crankshaft. 2012 Yamaha WaveRunner VXR VX1800AK 2011 Yamaha WaveRunner VXR VX1800AK 2013 Yamaha WaveRunner VXR VX1800AK 2014 Yamaha WaveRunner VXR VX1800AK 2015 Yamaha WaveRunner VXR VX1800AK 2016 Yamaha WaveRunner VXR VX1800AK 2017 Yamaha WaveRunner VXR VX1800AK 2018 Yamaha WaveRunner VXR VX1800AK