The biggest advantage to upgrading your OEM alternator belt, pulley, and tensioner setup to the JHM Automatic Belt Tensioner setup is that you no longer have to worry about the tension of your belt! No more worrying about whether your belt is tight enough or wondering if it is too loose. Improper belt tension can cause a lot of problems on the B6-B7 S4 and C5-allroad 4.2L: If it is too tight it can wear out alternator bearings and/or the belt prematurely. On the other hand, if the belt is too loose you can get a Battery Light on your dash indicating weak charging and in some cases thrown belts.

JHM's Automatic Tensioner Conversion Kit will also fix the issue we have seen where people break their OEM manual tensioner by over-tightening it. These OEM tensioners are expensive to replace.

In addition to the "user friendly" features of the kit, one of the best features is the price. The kit upgrades your belt tensioning components to a setup better than the OEM parts while still costing less than the retail pricing of the OEM parts it replaces.

Lastly, the JHM Automatic Tensioner Conversion Kit is much easier to install than the OEM parts it replaces. It's also easier to maintain.

INSTALLATION NOTES:

- For some installation notes and a set of labeled pictures detailing the modification, the core support clearancing, and installation of this kit, please visit https://jhmotorsports.com/jhm-automatic-belt-tensioner-conversion-kit-for-b6-b7-s4-and-c5-allroad-w-4-2l-v8-40v.html- Due to the increased width of the larger tensioner, some clearancing of the core support is required.
- NOTE: Tiptronic-Automatic Trans cars will need to bend the trans cooler lines in the core support as well to clear the auto tensioner arm or purchase our trans cooler kit upgrade which deletes those hard lines from the core support. See the instruction zip file above for more info and pictures.
- In order to install this kit, you will need to either put the car in "service position" or completely remove the "front clip" of the car. Doing this makes it a great time to consider installing an upgraded Snub Mount and a Zero Gap Snub Bracket.