This is a used Isuzu 6HE1 ECM. OEM Part#: 407910-6430, 181510-6220, 407910-6431. This will fit FRR FTR and GMC W5 W6 W7 trucks from 1995-1998. Call for pricing and availability at 1-877-564-6307 Press 1.  If you have any further questions speak with our sales team. 05-13-16 *Pictures are for Illustration Purposes Only*