Mercury 135-150 HP FourStroke Long Complete Gearcase 8M0099218

Mercury Complete Gearcase 8M0099218 is a genuine Mercury OEM replacement lower unit for select Mercury and Mariner 135-150 HP EFI FourStroke outboards. This assembly is the standard-rotation Long configuration for compatible 20-inch shaft engines.

Compatible with select applications including:

• Mercury 135 HP EFI FourStroke
• Mercury 150 HP EFI FourStroke
• Mariner 135 HP EFI FourStroke
• Mariner 150 HP EFI FourStroke
• Non-SeaPro configurations where 8M0099218 is specified

This is a complete gearcase assembly, rather than an empty gear housing. The assembly features a 1.92:1 gear ratio, standard rotation, 20-inch Long shaft configuration, and 13-tooth pinion.

Mercury lists separate gearcases for other configurations within this engine family, including 8M0099221 for the non-SeaPro XL configuration and 8M0099909 for the SeaPro Long configuration. Please confirmed combability with your engine's serial number. 

Specifications

Part Number: 8M0099218
Type: Complete Gearcase Assembly
Gear Ratio: 1.92:1
Rotation: Standard
Shaft Length: 20-inch
Configuration: Long (L)
Pinion Teeth: 13
Color: Black

Supersedes/Replaces: 8M0057746

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