AURELIO TECH Diesel EGR Valve Power Stroke Kit For 2003-2010 Ford 6.0 E-350 E-450 F-250 Super Duty 904-218 Penson & Co. is the onlly authorized seller of the brand "Aurelio Tech". 6-months warranty is offered only to those customers who bought the products from the designated authorized sellers. All products bought from non-designated vendors should be considered as counterfeit. No any services whatsoever will be provided to those counterfeit purchases 904-218 3C3Z 6A642-CA / 3C3Z6A642CA 904-228