6S5-81167-10-00 Crankshaft Oil Seal for Yamaha 252SD 1800 2021-2023

Crankshaft Oil Seal for Yamaha

This crankshaft oil seal, reference 6S5-81167-10-00, seals the crankshaft opening to hold oil in and keep contaminants out on select Yamaha marine engines.

Overview

This crankshaft oil seal is a direct-fit replacement sealing component for Yamaha 252SD 1800 watercraft covering the 2021 through 2023 model years. The crankshaft oil seal keeps lubricant contained at the crankshaft while blocking water, dirt, and debris from entering the engine internals. It is intended for owners performing routine maintenance or rebuilding a worn lower end on their Yamaha 252SD 1800.

Built For Performance

• Cross-references OEM part number 6S5-81167-10-00 for straightforward replacement
• Constructed to withstand continuous oil exposure and engine heat
• Tight lip design helps prevent lubricant seepage at the crankshaft
• Seals against water and debris intrusion in marine operating conditions
• Fits the 1800 engine platform used in the 252SD series

Fits These Machines

• for Yamaha 252SD 1800 (2021-2023)

On-The-Job Use

• Routine engine reseal and maintenance service
• Crankshaft and lower end rebuild projects
• Replacing a leaking or hardened original seal
• Preventive service before seasonal use

Specs At A Glance

Good To Know

Q: How do I know if my crankshaft oil seal needs replacing? A: Common signs include oil weeping around the crankshaft area, a drop in oil level, or visible seal hardening and cracking. Replacing it during a rebuild or reseal is the safest approach.

Q: Is this an original Yamaha part? A: This is an aftermarket replacement that cross-references OEM number 6S5-81167-10-00. Confirm your engine serial number and model before ordering.

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