Mercury SeaPro Command Thrust Long Complete Gearcase 8M0099915

Mercury Complete Gearcase 8M0099915 is a genuine Mercury OEM replacement lower unit for select Mercury 65-115 HP EFI FourStroke SeaPro outboards. This SeaPro-specific assembly features a 2.38:1 Command Thrust gearcase with standard rotation and a Long (L) shaft configuration.

Compatible with select applications including:

• Mercury 65 Jet FourStroke
• Mercury 75 HP EFI FourStroke
• Mercury 80 HP EFI FourStroke
• Mercury 80 Jet FourStroke
• Mercury 90 HP EFI FourStroke
• Mercury 100 HP EFI FourStroke
• Mercury 115 HP EFI FourStroke
• SeaPro configurations where 8M0099915 is specified

This is a complete gearcase assembly, rather than the basic empty gear housing. Mercury parts breakdowns identify 8M0099907 as the SeaPro-specific basic gear housing used within this gearcase family.

The Long configuration is the standard-rotation version for compatible SeaPro applications. Mercury lists 8M0099916 separately as the XL SeaPro gearcase and 8M0099917 as the CXL counter-rotation SeaPro gearcase.

Specifications

Part Number: 8M0099915
Type: Complete Gearcase Assembly
Application: SeaPro
Gearcase: Command Thrust
Gear Ratio: 2.38:1
Rotation: Standard
Configuration: Long (L)
Basic Gear Housing: 8M0099907

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