Mercury 350-400 HP V10 Counter-Rotation XXL Complete Gearcase (Silver) 8M0235767

Mercury Complete Gearcase 8M0235767 is a genuine Mercury OEM replacement lower unit for select 350-400 HP 5.7L V10 outboards. This assembly is the silver, counter-rotation, XXL configuration used with Mercury's 6.44-inch gearcase platform.

Compatible with select applications including:

• Mercury 350 HP 5.7L V10 Verado
• Mercury 350 HP 5.7L V10 SeaPro
• Mercury 400 HP 5.7L V10 Verado
• Counter-rotation configurations
• XXL shaft configurations where 8M0235767 is specified

This is the complete gearcase assembly, not the basic gearcase housing. The corresponding counter-rotation basic housing is serviced separately as 8M0228004, along with the internal gears, shafts, bearings, seals, and other lower-unit components.

Mercury offers this V10 gearcase family in multiple shaft lengths and rotations. The silver counter-rotation lineup includes Long, XL, XXL, and XXXL configurations, so the exact gearcase configuration should be confirmed before ordering.

Supersedes/Replaces: 8M0200090

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

Replaces / supersedes Mercury part numbers: 8M0227993.