Sealey diesel priming kits sealey vs552 a diesel priming kit from sealey designed to work in conjunction with the low pressure fuel circuit to reintroduce fuel back up to the fuel line after maintenance clear pipes allow visual detection of any air within the fuel system or any air being inadvertently drawn into the fuel line includes a valve to work in conjunction with ford ids diagnostic equipment allowing the vacuum to be monitored sealey vs552 diesel priming kit ford