Soft Caterpillar 1900235-00, rating 355HP@1800rpm; 1349LB-FT@1200rpm; 410HP@1800rpm; 1550LB-FT@1200rpm; 355HP@1800rpm; 1349LB-FT@1200rpm; 410HP@1800rpm; 1450LB-FT@1200rpm. 97 MY C-12 355/410 HP | | 1350/1550 or 1350/1450 lb-ft MT4 Trk | | Low NOx Kit Software | | SOFTWARE DATE CODE: Dec99