Revolution Water Pump Install January 04, 2011, 09:55:57 am Yahoo Message Number: 119395Yesterday I removed my original 5.7 pump in our 04 MB and replaced it with the Revolution model. It took a little over 2 hours, mostly due to the cramped working space. Few extra tools needed other than a electrical crimp tool and the only extra parts were crimp wire connectors. You need a 1/4" nut driver to remove the mounting screws and replace them in the new smaller footprint. Regards from Casa Grande. Jack