Mercury Racing Sport Master 1.60:1 XXL Complete Gearcase (Silver) 8M0236191

Mercury Racing Sport Master Complete Gearcase 8M0236191 is a genuine Mercury OEM replacement gearcase for select high-performance outboards equipped with the Sport Master gearcase system. This assembly is the standard-rotation, XXL configuration with a 1.60:1 gear ratio and silver finish.

Verified applications include select:

• Mercury Racing 400R 5.7L V10
• Sport Master gearcase applications
• Standard-rotation configurations
• XXL shaft configurations

The Sport Master gearcase is designed for high-performance applications and is offered in multiple shaft lengths and rotations. Mercury lists separate Long, XL, XXL, XXXL and counter-rotation assemblies within this 1.60:1 Sport Master family.

This is the complete gearcase assembly, not the basic gearcase housing. The silver basic Sport Master housing is serviced separately as 8M0168312, along with the internal gears, shafts, bearings, seals and other service components.

Supersedes/Replaces: 8M0199867

Because Sport Master gearcases are available in several shaft lengths, rotations and configurations, confirm the engine serial number and original gearcase before ordering.

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