This is an Isuzu 4HE1 ECM. OEM Part#: 897127810, 8972039860, 8972039861, 8972231800, 8972231801, 8972121070, 8972097081, 89772231800. They will fit 1999-04 Isuzu NPR, NQR and GMC W3, W4, W3500, W4500. 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
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