Yamaha 6H4-15100-20-00 Crankcase Assy Genuine OEM Yamaha part. Supersedes:6H4-15100-20-94,6H4-15100-20-1SSpecial Order Yamaha Marine Information:Additional Handling Time: Item transfers from an alternate warehouse requires an additional 23 business days to ship.Non Returnable: This item is ordered specifically for your application and cannot be returned or canceled once processed.Verify Fitment Before Ordering: Please confirm compatibility with your engine model.