Jet kits come with all the hardware you need to convert your motor to a jet. (You will need to use the water pump off of your existing lower unit.)
For use on – 75HP, 80HP, 85HP, 90HP Yamaha 2 Stroke Motors
Y90 Jet Kit
For use on – 75HP, 80HP, 85HP, 90HP Yamaha 2 Stroke Motors