(GOOD USED & BENCH TESTED w/ WARRANTY) 2009 Cummins ISM 320V Engine Control Module (ECM) 4963807 For Sale, Part # 4963807, CM876, EGR & DPF Model, CPL 3280, Pulled off Model ISM, Engine Serial# 35263066, 321HP @ 1800 RPM, ECM Code AT20135.20, Fits 2007, 2008, 2009, ECM Serial# 4010206, Stock # 4451 | TESTED & INSPECTED! All our PARTS are TESTED and Ship PRIORITY MAIL! OVERNIGHT SHIPPING options are available! Contact us for more information! CALL (305)688-1101