This is ONLY for the 2003 through early 2004 6.0L Ford Powerstroke engines.  A couple ways to determine if you have the early pump is if you have the ICP sensor near the firewall, or if you have the ICP sensor up by the alternator BUT the the HPOP cover is cast iron and completely covers the pump.  The 2004.5 through 2007 pump cover is aluminum and the pump is cast iron and sticks out the top of the cover. 

*2 Year Unlimited Mileage Warranty*