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.)
Notes about this kit:
Includes neutral cable assy #1566.3 on Yamaha motors.
Uses 7 7/8 impeller and liner in place of 7 5/8 impeller and liner.
For use on – F250HP, 225HP, 230HP, 235HP, 240HP, 245HP, 250HP Mercury/Mariner 4 Stroke Motors, Yamaha 2 Stroke Motors, Yamaha 4 Stroke Motors