This adapter mount allows you to install a Bosch oxygen sensor for tuning purposes onto any 2012 and newer Yamaha SVHO, SHO or HO watercraft. This adapter easily installs between the factory exhaust pipe and manifold. Included are new gaskets, stainless steel mounting bolts, and a stainless steel block-off plug with sealing washer to block-off the sensor when not in use. The adapter mount is precision machined from billet aluminum and anodized for increased corrosion protection.

Fits all 1.8L and 1.9L Yamaha HO, SHO and SVHO watercraft from 2012 to present