Fits '85-later 298mm units with 30-spline input shaft. For '82-'84 298mm units with 27-spline input shaft, converter and stator shaft will need to be updated to '85-later design.OE Part No.17803689, 08663580 Smart-Tech Input Housing with 298mm Input Shaft Assembly; 4L60, 4L60-E; Bolt-on Anchor Plate; 3-4 Clutch Apply Plate; 3-4 Clutch Return Springs (10); Input Drum Reinforcement Sleeve installed; Overrun Piston; Overrun Piston Inner Seal; Overrun Piston Outer Seal; PTFE Impregnated Rear Stator Support Bushing; Socket Head Cap Screws (15);