A few days ago I was having some work done at my local garage, Quality Tune-Up on Douglas in Roseville, and a blonde woman came in and asked for a seven-hundred-ten knob. We all looked at each other and a customer in the lobby asked, 'what is a 710 knob?' She replied, 'you know, the little piece in the middle of the engine. I've lost it and need a new one.' She also said she didn't know exactly what it was, but this piece had always been there. The mechanic (owner Chris) gave her a piece of paper and asked her to draw what it looked like. She drew a circle and in the middle of it wrote 710. He then took her over to a car which had it's hood up and asked, 'is there a 710 knob on this car?' She pointed and said, 'of course, it's right there!'
If you're not sure what a 710 knob is, scroll down...