U4L-4E Jet Kit 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: Add $160.00 for 6 1/8 stainless steel impeller upgrade, #1737. For use on – 40HP, 45HP, 50HP Johnson/Evinrude 4 Stroke Motors Price: $