Kawasaki 750 900 1100 ZXI STX Ultra Starter Solenoid Relay Switch 27010-3737 Drop in Aftermarket Ultra 150 Kawasaki Starter Relay Plugs into existing wiring harness. Quality Replacement for Kawasaki OE Relay Replaces Kawasaki Part # 27010-3737 See Description for Exact Model & Year Compatibility