Mazda S4 Rx7 Waterpump with Billet Impeller

Fits series 4 Rx7 waterpump housings (2 bolt thermostat housing) 

• Brand new Genuine Mazda waterpump fitted with billet impeller upgrade 
• Impeller machined from aircraft grade 6061 T6 aluminium
• Black anodised for longevity 
• New gasket included
• Fitting instructions included 

This impeller is designed to eliminate cavitation, increasing waterpump cooling efficeincy and flow rate, and freeing up a little extra HP at a higher rpm. Not only is the blade design vastly improved over factory, but impeller to housing tolerances have been reduced to aid with proper waterpump function 

A must for high rpm engines, and any application that has excessive coolant temps