If anyone has the plastic tensioners Tom (Motorhead4Ever) spoke to earlier, his fear for the longevity/durability is spot on. Just get a set of cast iron units. Here is a link to a Parts Geek listing for them => Left & Right Tensioner The left part number is - 17877-07928337, and the right part number is - 17877-07895506. As of this posting, the price is $53 each. There are Mellings and Cloyes on the same page for even less.