I bought these two \"auto\" drain plugs for my Waverunner GP1300R and they work well enough but do allow a small amount of water to enter the hull after being anchored at the lake for the day rocking back and forth. I only used them once maybe twice for a few hours on a freshwater lake and the blue anodizing faded. There is a ball that gets pressed into a hole from water pressure when floating which keeps water from entering and then once moving forward the ball moves to the rear and allows water in the hull to be released. Once you remove the PWC from the water the valves open. These would probably be best on something like a Superjet or a Waverunner that will be ridden the whole time while on the lake or in the ocean. Please confirm they will fit your Waverunner etc, I can only confirm they fit GP1300R\'s but of course many Yamaha watercraft have the same drain plugs. See pictures for condition and toconfirm items, thanks!
** Yamaha Super Jet, GP GPR XV VXR XL XLT Blaster Venture **
Description: A simple installation drain valve alternative for the OEM drain plugs in Yamaha model Watercraft. Machined from 6061 aluminum, the Vacate Valve operates on the same principle as a One Way valve, using the forward motion of the watercraft and gravity to allow ingested water to simply vacate the hull in one direction only. Direct threaded replacement for OEM, the Vacate valve also simplifies interior flushing of the engine compartment. Made in the USA
