This Oil Pump is for early models with a Oil Drain Bolt.If you have a Oil Drain Cap with O'Ring and Screen, see 15100-07-0010
This Boot for the HiSun 1000 is from the Throttle Body to the Plastic intake pipe.Approx. I.D. of 68mm and 76mm. Part # 17501-119-01000 is embossed on the rubber body.
