Parts list: № Number Qty Name Options 1 DE31156 1 Gear Case Next page: ST867446 Engine Gear Case Differential, Tier 2 and Stage 5 (2 of 4) ST867512 Engine Gear Case Differential, 6.8 L Tier 2 (1 of 4) ST823074 Torsional Damper ST821263 Primary Countershaft U-Joint and Driveshaft ST867517 Engine Gear Case Differential, 6.8 L Tier 2 (3 of 4)