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.
