VANOS AND VANOS CENTRAL BOLT IDENTIFICATION. INFORMATION Replacing the VANOS gear central bolts or the VANOS gear will require a component inspection when the engine assembly has been previously replaced in one of the vehicles listed above. Ordering the parts via the model, production or VIN may provide the incorrect part numbers. The procedure below will help identify which VANOS parts are installed in the replacement engine. 11 36 7 608 788 Inlet adjustment unit Oulet adjustment unit Refer to the ETK and the repair instructions for one time use fastener and component information regarding additional screws, gaskets and seals.