2003 PETERBILT 379 - STEERING:LINKAGES:KNUCKLE:SPINDLE:ARM 2003 PETERBILT 379 - TRAILER HITCHES:FIFTH WHEEL ASSEMBLY 2003 PETERBILT 379 - SERVICE BRAKES, AIR:SLACK ADJUSTERS 2003 PETERBILT 379 - POWER TRAIN:AXLE HUBS