Meziere pulled out all the stops with this belt-driven billet aluminum water pump and built an outstanding piece that will be the standard by which others are measured. The real beauty, however, appears on your temperature gauge! Top-end figures match the best racing pumps on the market and off-idle flow is 5 to 7 gpm higher than any competitor. 400 Series Mechanical Water Pumps are race-bred inside and show-quality outside. They save racers over 10 HP compared to a stock pump and eliminate most low-speed cooling problems for street rodders. For small block Chevy and big block Chevy (standard or reverse rotation) and small block Ford, these water pumps are all billet. Their appearance and unmatched low-speed flow numbers make them popular with the street rod crowd while their high-RPM performance can cool most race engines.