Description
Sierra 18-6260 OMC Cobra Marine Alternator 12V 51 Amp
Keep your boat's electrical charging system operating with the Sierra 18-6260 OMC Cobra Marine Alternator 12V 51 Amp, designed for compatible OMC Sterndrive and Cobra stern drive engines. This 12-volt replacement alternator is designed for marine charging applications requiring a 51-amp output, an internal voltage regulator, and a single-groove pulley.
Built for compatible Prestolite and Motorola alternator applications, the Sierra 18-6260 provides a replacement option for select OMC Cobra marine engines. Its negative-ground configuration and integrated voltage regulator support the engine's battery-charging system.
Key Features & Specifications
- Brand: Sierra Marine
- Part Number: 18-6260
- Product Type: I/O Marine Replacement Alternator
- Application: OMC Sterndrive / Cobra Stern Drive
- Voltage: 12 volts
- Output: 51 amps
- Voltage Regulator: Internal
- Ground Polarity: Negative ground
- Pulley: Single-groove
- Alternator Applications: Prestolite / Motorola
- OEM Replacement Reference: OMC 987774
Specifications are based on published product listings.
Marine Engine Compatibility
The Sierra 18-6260 is intended for compatible OMC Cobra stern drive charging systems originally equipped with the corresponding Prestolite or Motorola alternator.
Before ordering, verify your engine model, serial number, original alternator, mounting configuration, pulley, and electrical connections to ensure proper fitment.
Shop Sierra Marine Alternators
Looking for a replacement OMC Cobra alternator? Shop the Sierra 18-6260 12V Marine Alternator at U.S. Boating & Marine Supplies. Find the right marine electrical replacement parts for your boat and confirm compatibility before checkout.
