Soft Caterpillar 1919934-00, rating 425HP@2100rpm; 1452LB-FT@1200rpm; 425HP@2100rpm; 1552LB-FT@1200rpm. 1998 MY 425 HP 1450 & 1550 lb-ft | | RV/Firetruck | | Low NOx Kit Software | | SOFTWARE DATE CODE: Apr00 | | INTERLOCK CODE: 330 | | Rating#1: | | 425HP@2100rpm, | | 145