Yamaha Power Valve 

Part # 66E-1131S-10-00 L15 

Fits in xlt 1200 155 hp 1999-2005

Fits in gpr 1200  155 hp 2000-2002

Fits in gpr 1300 2003-2004

Fits in jetboats ls2000 xr1800 and more

It's in great condition 

See pictures for more details 

Any questions message me thanks