These start off as BRAND NEW Bosch pump and are modified to be a L158 with pinned followers which prevent one of the most common failure points with CP4 pumps. These are an upgrade and direct fit for all North American N57 and B57 equipped vehicles. Will support 850HP+ with custom compound turbos and 100% injectors. These are custom order and while we usually keep one on the shelf we may be between order which would delay shipping.
