Soft Caterpillar 1900237-00, rating 410HP@2100rpm; 1550LB-FT@1200rpm; 410HP@2100rpm; 1450LB-FT@1200rpm. 424 HP 1550 PT Truck (Dome) | | Low NOx Kit Software | | SOFTWARE DATE CODE: Dec99 | | INTERLOCK CODE: 306 | | Rating#1: | | 410HP@2100rpm, | | 1550LB-FT@1200rpm | | Rat