Mercury 75-90 HP OptiMax 2.33:1 Long Complete Gearcase 9011J37

Mercury Complete Gearcase 9011J37 is a genuine OEM replacement gearcase for compatible Mercury 75 and 90 HP OptiMax direct fuel injected outboards. This configuration features a 2.33:1 gear ratio, standard rotation, and Long 20-inch shaft length.

Configuration:

• Mercury 75/90 HP OptiMax
• Direct Fuel Injection (DFI)
• 2.33:1 gear ratio
• Standard rotation
• Long 20-inch shaft length
• Complete gearcase assembly

This complete assembly includes the gearcase housing and internal gearcase components as an assembled replacement unit. Mercury uses different gearcase configurations within the OptiMax family based on horsepower, shaft length, and engine serial number, 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.