Mercury 3.0L Counter-Rotation XX-Long Complete Gearcase 859399T17

Mercury 3.0L Counter-Rotation XX-Long Complete Gearcase 859399T17 is a genuine Mercury OEM complete gearcase assembly for compatible Mercury 3.0L outboards. This gearcase is configured for counter rotation and an XX-Long shaft length.

Configuration:

• Mercury 3.0L outboard applications
• Counter rotation
• XX-Long (XXL) configuration
• Complete gearcase assembly

This complete assembly includes the gearcase housing and internal gearcase components as an assembled replacement unit. Mercury 3.0L outboards use different gearcase configurations based on horsepower, rotation, shaft length, and engine application, so the replacement should be matched to the specific outboard before ordering.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.

Replaces / supersedes Mercury part numbers: 859399R17.