Wellman Glow Plugs Early 2003 Ford 6.0 6.0L Diesel Powerstroke (set of 8) F350 F250 & Excursion Fits 2003 Ford 6.0L Diesel Engines up to build date of 9/22/2003 These plugs heat up 20% faster and get 100 deg. hotter than the original plugs 1 Year Warranty Set of 8