Parts list: № Number Qty Name Options Next page: ST821280 Primary Countershaft Gear Case ST865850 Power Take-Off Gearcase, ProDrive™ (4 of 8) ST867467 Engine Gear Case Differential, Tier 2 and Stage 5 (3 of 4) ST867468 Engine Gear Case Differential, Tier 2 and Stage 5 (4 of 4) ST867429 Engine Gear Case Housing, Tier 2 and Stage 5