6.0L Injector Inlet Seal

When performing ICP leak testing and inspections include the injector inlet o-rings and retainers. This 6.0L injector shows a failed backer ring and o-ring. Some re-man companies state this failure is the result of improper oil manifold installation. All of the examples we came across were factory injectors in 2005 model year engines. Sources indicated there were machining inconsistencies with the snap ring grooves that caused a run of injectors to fail.