Restore full propulsion and power transfer to your outboard with this genuine Mercury Outboard Drive Shaft. This factory-original Drive Shaft Assembly (Part Number: 45-859102) is precision-machined specifically for Mercury 40HP, 50HP, and 60HP EFI 4-stroke lower units, delivering maximum torque strength and corrosion resistance under heavy marine loads.

Product Highlights

• Genuine OEM Precision: Factory Mercury Marine component, forged from high-grade marine steel alloy to resist saltwater corrosion, twisting, and spline wear.
• Direct Lower Unit Fitment: Engineered to match exact factory specifications for effortless alignment with your 40-60HP lower gearcase and water pump impeller housing.
• Cross-Reference Part Numbers: 45-859102. Please inspect your old shaft or supply your engine serial number to verify compatibility before ordering.

Guaranteed Fitment & Application

This 45-859102 Drive Shaft is specifically engineered for Mercury & Mariner 4-Stroke Electronic Fuel Injected (EFI) outboard motors:

• Mercury Outboard 4-Stroke: 40 HP EFI (3 & 4 Cylinder)
• Mercury Outboard 4-Stroke: 50 HP EFI (4-Cylinder)
• Mercury Outboard 4-Stroke: 60 HP EFI (4-Cylinder)
• *Fitment Tip: Designed for standard lower unit applications. Always replace the lower unit shaft seals and inspect the water pump impeller during installation.

Product Specifications

• Brand: Mercury Marine (OEM)
• Part Type: Drive Shaft / Lower Unit Shaft
• MPN / Part Number: 45-859102
• Engine Compatibility: 40HP - 60HP EFI 4-Stroke
• Condition: Brand New & Factory Original

Shipping & Installation Notice

Replacing the drive shaft on your Mercury 60HP EFI Outboard requires proper lower unit disassembly. Every 45-859102 Shaft is securely packaged in heavy-duty protective tubing to prevent any bending, spline deformation, or thread damage during transit. Fast domestic and international shipping options are available at checkout!