i'll get the part number for you in the morning if it's on the box, I really don't know where the service guy picked it up. it may be on the box also. I looked it up on line and came up with a part number and told the guy to stop by and pick up one. he wanted to change the water separator/filter assy. he thought that was the problem. I told him after we change the pump we will tackle that if it doesn't fix it. yes that throttle control worries me, when I first got it I lost all throttle and was concerned. I cleaned the terminal where it plugs in by the gas pedal and it has never done it again. what did you find out?