John Deere Gator 825i 4×4 UTV Side by Side Knock Sensor, Sensor, Kawasaki Mule Pro-Fxt Range Edition 4×4 UTV Side by Side Knock Sensor, Sensor, Mule PRO-FXT models 4×4 UTV Side by Side Knock Sensor, Sensor, $12 US Dollars Shipping World Wide, Sold by Allendr.