if you use fuel from questionable sources or notice performance issues
or fluctuates erratically
and environmental conditions
or visible corrosion and water leakage around the shift shaft area on the bell housing
but always double-check the part number
3-Star California Outboard Graphic Sticker – Fits Multiple Brands (Replaces SeaSierra, YiheoZux, XRmarine) 2.5HP if you use fuel fromProduct Details This Ultra Low Emission 3 Star California Outboard Graphic Sticker Decal is required for outboard engines that meet California's rigorous Ultra Low Emission (3 Star) standards. It is designed for broad compatibility with engines from Mercury, Honda, Johnson, Evinrude, Yamaha, Tohatsu, Suzuki, and Sea Doo that are certified to CARB 3 Star levels. It serves as a direct replacement for several aftermarket parts, including SeaSierra,