Quicksilver 8M0204700 Propeller Shaft Oil Seal

The Quicksilver 8M0204700 is an OEM propeller shaft seal designed for Mercury Marine outboard engines and gearcase assemblies. This critical seal prevents water intrusion into the lower unit while retaining gear oil within the gearcase housing, protecting internal components from corrosion and premature wear.

Key Features:

• Fits 135-300 HP Verado outboards, 150 HP 4-Stroke EFI, 200-250 HP 3.0L DFI, and 175-300 HP V6 3.4L and V8 4.6L engines
• Seal dimensions: 31.7mm x 42.9mm x 6.5mm
• Stainless steel internal spring maintains constant sealing pressure
• High-grade construction resists marine oils, saltwater, and hydraulic fluids
• Cross-references: 888483, 888906, 896600, Sierra 18-0564, GLM 85019

This genuine Quicksilver seal ensures proper fitment and long-lasting performance in demanding marine environments. Two seals are typically required per lower unit gearcase assembly. Regular inspection and replacement of propeller shaft seals during routine maintenance helps prevent costly lower unit damage and maintains optimal engine performance.