CATERPILLAR C12, (GOOD USED/ TESTED) OEM 2003 Caterpillar C12 Engine Control Module, ECM, ECU, 236-8688-00, 221-7872, 221-7872, MBL; Stock #: E2376 For more information about this listing, shipping, technical questions email us at sales@jjrebuilders.com or call 1-800-971-
