Soft Caterpillar 1869920-00, rating 500HP@2100rpm; 1450LB-FT@1200rpm. 500 HP 1450 PT Motorhome | | Low NOx Kit Software | | 5EK67194-up | | SOFTWARE DATE CODE: Dec99 | | INTERLOCK CODE: 354 | | Rating#1: | | 500HP@2100rpm, | | 1450LB-FT@1200