Automatic Primary Chain Tension Adjuster Original Equipment on '06-'17 Dyna® and '07-'17 Softail® and Touring models, this Automatic Primary Chain Adjuster eliminates the need to manually adjust the primary chain tension at traditional service intervals. Fits '85-'06 Evolution 1340 (except '85-'88 Softail) and Twin Cam powertrain. Requires separate purchase of model-specific primary gasket and seals.
This used product has about 90% of its life left. Also if you are looking for this type of an adjuster I would highly recommend it. It was extremely easy to install and I have one less worry. I will still check the adjuster to make sure it’s working, I just know that I’m not going to have to do much more work to keep the chain properly adjusted. I did read that if you have a large motor and you like to really get on the throttle that it may not be the best option for you. The article I read said that you may end up with an over tighten chain. For my easy style of writing this is perfect.