For engines with Arrangement #s: 2W1900, 7N2617, 8N9999, 1109524, 1109525, 1109698 ,1778865, 1778866, 1778869, 1778870, 2W7067, 4W3800, 4W3801, 7W7264, 2W7067, 4W3800, 1315403, 1315404, 1315406, 1778873, 1778874, 1778875, 1778876, 1778877, 1778878, 1778879, 1778880, 1093830, 1093839, 1206694, 1206695, 1206700, 449630,5 2385342, 2385343, 2385344, 2385345, 2385348, 2385349

Serial number Prefix : 91U, 4BT, 2AM, 1SS, 4BM, 4T7, PFH

For engines with Arrangement #s: 4N2239

Serial number Prefix : 91U