6S5-81167-10-00 Crankshaft Oil Seal for Yamaha FX HO 1900 2024-2026

Crankshaft Oil Seal for Yamaha

This crankshaft oil seal, referenced as 6S5-81167-10-00, seals the crankcase at the crankshaft to keep oil where it belongs and water and debris out of the engine.

Overview

This crankshaft oil seal is a direct replacement component for Yamaha FX HO personal watercraft, built to hold a tight seal at the crankshaft journal. The 6S5-81167-10-00 crankshaft oil seal keeps lubricant contained and prevents water intrusion that can damage internal engine parts. It suits owners performing routine engine maintenance or a rebuild who need a dependable crankshaft oil seal for Yamaha watercraft.

Built For Performance

• Fabricated from oil-resistant rubber compounds that hold up to heat and constant lubricant contact
• Precision-formed lip geometry maintains a consistent seal against the rotating crankshaft
• Spring-backed sealing lip keeps contact pressure steady through temperature swings
• Direct fitment for the crankshaft position on the specified engine
• Cross-references OEM part number 6S5-81167-10-00 for easy verification

Fits These Machines

• for Yamaha FX HO 1900, 2024-2026

On-The-Job Use

• Replacing a worn or leaking seal during top or bottom end engine service
• Crankcase resealing as part of a full engine rebuild
• Routine maintenance to stop oil weep at the crankshaft

Specs At A Glance

Good To Know

Q: How do I know if my crankshaft oil seal needs replacing? A: Oil weeping around the crankcase seam, low oil levels without visible external leaks, or a seal that feels hard and cracked during inspection all point to replacement. Any time the crankcase is opened for service is a good moment to install a fresh seal.

Q: Should the seal be lubricated before installation? A: Coating the sealing lip with clean engine oil eases installation and protects the lip from tearing on the crankshaft. Seat it squarely and fully into its bore to avoid a cocked seal that will leak.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.