This is a Genuine Ford OEM Exhaust Rocker Arm Assembly for 2003-2010 Ford Powerstroke 6.0L diesels. This is a single exhaust rocker assembly.
For complete engine you will need the following…
6 – Complete Rocker Assembly: 4C3Z-6564-AA
2 – Intake Rocker Arms: 3C3Z-6564-BB
2 – Exhaust Rocker Arms: 3C3Z-6564-AB
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