CATERPILLAR 3126, (CORE) Caterpillar 3126 Diesel Engine Computer Module, ECU, ECM, 7AS, for sale!!!! P/N: 149-6989-01 Stock #: E1880 For more information about this listing, shipping, technical questions email us at sales@jjrebuilders.com or call 1-800- 971-3019. We can sh