Review on 🔧 ACDelco GM OEM 12608580 Timing Chain Tensioner Kit + Seal by Tommy Willis

On 4 cylinder Ecotec engines these tensioners will need to be loosened each time you remove them to replace the timing chain, replace the phaser or adjust the timing if the timing chain has skipped a tooth is. If you try to disable them, they are very easy to destroy. I buy OEM tensioners from AC Delco, the OEM supplier, and I always have a new one on hand. If you replace it, be sure to activate it before finally setting the time and reinstalling the valve cover. In addition, they must be tightened with a specific torque.