The Bostech WHO6201 Injector Harness for your 2005-2007 Ford 6.0L Powerstroke is a direct replacement for your worn or failed factory harness. At Bostech, we have seen a rash of aftermarket harnesses that just don't work! This often leads to erroneous diagnosis of problems, especially those that are injector related. Technicians assume the harnesses they just put on the vehicle right out of the box are reliable, as they should. This leads to misdiagnosing an injector, or FICM as the problem. In actuality it is often the poorly made harness, which often consists of inferior materials. That's why Bostech's harnesses are made from the best materials, using the same attention to quality as the OEM, without the OEM prices.