Description
The Sierra 18-6840 MERCURY Alternator is a 50 Amp, 12V aftermarket replacement part designed specifically for Mercury Marine outboard engines. It features an internal regulator and a serpentine pulley setup, built with corrosion-resistant materials to withstand harsh marine environments.
Engine Compatibility
This alternator is engineered to fit the following engine specifications:
- Engine Type: Mercury 75 to 115 HP EFI (4-Stroke) Outboards
OEM Part Interchange
The Sierra 18-6840 directly replaces and interchanges with the following original equipment manufacturer (OEM) part numbers:
- Mercury Marine: 50-897755T
- Mercury Marine: 897755T
- Mercury Marine: 8M0063970
Technical Specifications
- Amperage: 50 Amp
- Voltage: 12V
- Pulley Style: Serpentine
- Regulator: Internal
- Inclusions: Typically includes a wiring harness for straightforward installation
