I NEEDed TO REPLACE THE FACTORY COOLING FAN ON MY SONS QUAD, THE FACTORY FAN FOR THE 2004 POLARIS 400 WATER COOLED IS SEVERAL HUNDRED DOLLARS, LOOKING HERE ON EBASY A USED ONE GOES FOR $50 $60 AND HIGHER, I BOUGHT A BRAND NEW PROCOMP FAN FROM SELLER Northcoast-Performance ALONG WITH THE ZIP TIE MOUNTING KIT FOR UNDER $30 INCLUDING THE FAST SHIPPING, THESE FOLKS ARE THE CHEAPEST ON THESE FANS, THEY SELL 10" 12" & 14'' AND THEY FIT GREAT IN THE SAME PLACE AS THE FACTORY SETUP, THE PLUGS EVEN MATCHED UP!!! DONT OVER PAY FOR A POLARIS FAN NEW OR USED, BEAWARE OF THE SELLERS SELLING THE NEW POLARIS FANS FOR THE $69 PLUS SHIPPING, THERE ARE SEVERAL ON EBAY, THEY ARE SELLING KNOCK OFF PROCOMP FANS FOR TWICE THE MONEY, IF YOU WANT A PICTURE SHOWING THE FAN MOUNTED IN THE QQUAD ILL BE HAPPY TO SEND IT TO YOU