Mercury U-Joint Bellows Set (816431A1)

The Mercury U-Joint Bellows Set (816431A1) is an OEM-compatible replacement part developed to protect the U-joint area from external factors in Mercury sterndrive and MerCruiser propulsion systems. This bellows set, critical in Mercury marine engines, prevents water, salt, and dirt from reaching moving parts, ensuring long-lasting and safe operation. Thanks to its robust and flexible structure, it adapts to vibrations and angular movements during engine operation, thus preventing performance loss.

In sterndrive systems operating in marine environments, the U-joint area is constantly exposed to moisture and pressure. A worn or cracked bellows can cause water ingress, leading to serious mechanical failures. The Mercury U-Joint Bellows Kit (816431A1) is manufactured from durable rubber material to minimize these risks and fully complies with OEM tolerances. This eliminates the need for extra modifications during installation and maintains system integrity.

Mercury U-Joint Bellows Set Specifications

The Mercury U-Joint bellows kit, code 816431A1, is compatible with many Mercury and MerCruiser sterndrive systems, including the Alpha One Gen II. When used with correct installation and periodic maintenance, it extends the life of driveline components and provides a quieter, more stable ride. Choosing genuine Mercury spare parts is the most effective way to maintain the performance and safety of your marine engine in the long term.