Timing Chain is in the front of the motor and attached to a set of gears and pulleys that power multiple mechanical components, including the crankshaft and camshaft. Timing chain is subject to wear and tear even break over time. Choose Hexautoparts timing chain kit to remedy the issue for a great timing chain price. Check out helpful resources: What Is A Timing Chain Kit? How To Change A Timing Chain On 2004-2008 Ford F150 5.4L?