I need to pick up a dipstick and dipstick tube for the 72 YH 455 and I'm having a hard time figuring out which one to pick up. On the Yearone.com site, there is an inner dipstick tube, lower dipstick tube, and upper dipstick tube. Which ones do I need to pick up?
There are also two length dipstick available, a 19" and a 31".
