Soft Caterpillar 2043504-00, rating 500HP@2100rpm; 1649LB-FT@1200rpm. 96MY 500 HP, 1650 lb-ft corctd tcm, Low NOx | | Low NOx Kit Software | | 5EK67194-up (corrected power) | | SOFTWARE DATE CODE: Jan01 | | INTERLOCK CODE: 474 | | Rating#1: | | 500HP