Sierra 118-2322 MerCruiser Shift Shaft for I and Alpha I Stern Drives

The Sierra 118-2322 Shift Shaft is a precision-engineered replacement part designed for MerCruiser I and Alpha I stern drives. This intermediate shift shaft is located in the upper gear housing and is responsible for engaging and disengaging the drive unit from gear.

How It Works:

The shift shaft interfaces directly with the transmission to move the drive unit into or out of gear. It communicates with the gearbox to determine the direction of propeller shaft rotation, enabling forward and reverse operation. The lower end features a spline connector that links to the shift shaft in the lower gear case.

Key Features:

• OEM-Quality Replacement: Engineered to meet or exceed original equipment specifications
• Spline Connector: Lower end spline connects directly to the lower gear case shift shaft
• Durable Construction: Built to withstand harsh marine environments with minimal maintenance required
• Direct Replacement: Replaces MerCruiser OEM part numbers 62104 and 621041
• Cross-Reference Compatible: Interchangeable with GLM part number 21421
• Quantity: One (1) shift shaft included per package

OEM Cross-Reference Part Numbers: MerCruiser Stern Drive 62104, 621041 | GLM 21421