Ek xtop revo d5 is a high performance aftermarket pump volute body with vibration reducing mounting clamp for xylem d5 series water pumps this unit offers increased hydraulic performance up to 15 compared to original factory top the new d5 revo pump volute body system features a fully rounded design thus offering greater usability allowing installation at any angle within 360 of rotation special rubber shock absorber is used to de couple the the main pump body from the mounting clip