Mercury 9011J15 Complete Gear Case Lower Unit Assembly 2.3:1 Ratio 20" Shaft

Mercury · Mechanical & Power Transmission

Description  The Mercury 9011J15 Complete Gear Case Lower Unit Assembly is a factory OEM gear housing designed for Mercury and Mariner outboard engines. It transfers engine power to the propeller through a precision gearset while housing the driveshaft, bearings, and lubrication system. Built for durability and efficient propulsion, this lower unit supports reliable performance in marine outboard applications.   Technical Specifications  Condition New/Never Used Surplus Brand Mercury Category Marine Engine Components Part Number 9011J15 Subcategory Gear Housing Assemblies Product Type Complete Lower Unit / Gear Case Assembly Engine Compatibility Mercury & Mariner 75–125 HP Outboards Gear Ratio 2.3:1 Shaft Length 20 in Pinion Teeth 12 Rotation Standard (Right-Hand) Housing Color Black Weight 63 lb   Information About 9011J15 The 9011J15 is a complete gear housing assembly manufactured by Mercury Marine for compatible 75–125 HP outboard engines. It incorporates a sealed gearcase with internal gearing configured with approximately a 2.3:1 gear ratio and a 20-inch shaft length, allowing efficient torque transfer from the engine to the propeller. The assembly integrates components such as the driveshaft, gearset, water pump housing, and bearing system within a corrosion-resistant marine housing. Designed for long-shaft installations, the gearcase supports dependable propulsion and smooth power transmission in recreational and commercial marine applications Key Features: Complete Lower Unit Assembly: Integrated gear housing designed to transmit engine power directly to the propeller system. 2.3:1 Gear Ratio: Provides efficient torque multiplication and propulsion performance. 20-Inch Shaft Configuration: Designed for long-shaft outboard engine installations. Mercury OEM Construction: Manufactured to factory specifications for compatibility with Mercury and Mariner outboards. Integrated Gearcase Components: Includes driveshaft housing, internal gears, bearings, and lubrication system. Marine-Grade Housing: Durable corrosion-resistant construction for continuous marine operation. Multi-Engine Compatibility: Commonly used on Mercury 75–125 HP outboard motors with 2-cycle configurations. The 9011J15 delivers the reliability and precision required for efficient power transfer in marine outboard propulsion systems.

Brand: Mercury · Category: Mechanical & Power Transmission

Key features

• Complete Lower Unit Assembly: Integrated gear housing designed to transmit engine power directly to the propeller system.
• 2.3:1 Gear Ratio: Provides efficient torque multiplication and propulsion performance.
• 20-Inch Shaft Configuration: Designed for long-shaft outboard engine installations.
• Mercury OEM Construction: Manufactured to factory specifications for compatibility with Mercury and Mariner outboards.
• Integrated Gearcase Components: Includes driveshaft housing, internal gears, bearings, and lubrication system.
• Marine-Grade Housing: Durable corrosion-resistant construction for continuous marine operation.
• Multi-Engine Compatibility: Commonly used on Mercury 75–125 HP outboard motors with 2-cycle configurations.

Specifications

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