U-Joint Assembly For MerCruiser Volvo 865496A01, 3860232, 865511T, 18-6406

U-Joint Assembly for MerCruiser and Volvo

This u-joint assembly replaces OEM part numbers 865496A01, 3860232, 865511T, and 18-6406 for MerCruiser and Volvo Penta stern drive systems, providing reliable power transfer from the engine to the drive unit.

Overview

This u-joint assembly is a direct replacement for MerCruiser and Volvo Penta marine engines, designed to transmit rotational power smoothly while accommodating angular misalignment. It is a critical component for maintaining proper drivetrain function in boats, ensuring the u-joint assembly delivers consistent performance on the water.

Built For Performance

• Precision-machined bearing cups for smooth rotation and reduced vibration
• Heat-treated alloy steel construction for durability under heavy loads
• Greaseable design allows for periodic lubrication to extend service life
• Reinforced cross shaft resists twisting and fatigue
• Corrosion-resistant coating protects against marine environments

On-The-Job Use

• Replacing worn or failed u-joints in MerCruiser and Volvo Penta stern drives
• Restoring smooth shifting and eliminating driveline clunks during acceleration
• Used in routine maintenance of inboard/outboard boats operating in fresh and saltwater
• Ideal for marine mechanics performing drivetrain overhauls

Specs At A Glance

Good To Know

Q: Will this u-joint assembly fit my 1998 MerCruiser Alpha One? A: This u-joint assembly is designed to fit many MerCruiser Alpha One and Gen II drives, but always verify your drive's specific part number before ordering.

Q: How often should I replace the u-joint assembly? A: Inspect the u-joint at every annual service; replace if you notice play, noise, or reduced grease output.

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