Soft Caterpillar 1869909-00, rating 434HP@1800rpm; 1450LB-FT@1200rpm; 500HP@2100rpm; 1450LB-FT@1200rpm; 434HP@1800rpm; 1450LB-FT@1200rpm; 434HP@2100rpm; 1450LB-FT@1200rpm. 435/500 dual certified OWS | | Low NOx Kit Software | | 5EK67194-up | | SOFTWARE DATE CODE: Dec99 | | INTERLOCK CODE: