GM 863077-1 Mpi Boat Engine Alternator Generator 4.3 262 V6

( Brand: Gm ), ( Manufacturer Part Number: 863077-1 ), ( Part Type: Engine Alternator Generator ), ( Country Of Origin: United States )

Review GM Mercury 4.3 Mpi 262 V6 Boat Engine Alternator Generator fits MERCRUISER MARINE 2008

The GM Part Number 863077-1 is an alternator generator specifically designed for Mercury Mercruiser 4.3 MPI 262 V6 marine boat engines. This alternator is a crucial component of the charging system, responsible for converting mechanical energy into electrical energy.

The alternator is constructed with a robust and durable design, featuring a cast aluminum housing that protects the internal components from the harsh marine environment. Its compact size makes it an ideal fit for most marine applications, ensuring minimal intrusion into the engine compartment.

The alternator boasts a powerful output of 85 amps at 13.5 volts, ensuring that the battery is kept fully charged even during heavy usage. It is designed to operate smoothly and efficiently, with a three-phase design that minimizes electrical losses and maximizes power output.

The alternator is also equipped with a regulator that maintains a stable voltage output, preventing damage to the battery and ensuring optimal performance of the electrical systems on board. The regulator is adjustable, allowing for fine-tuning to specific battery requirements.

The alternator comes with a set of mounting brackets and necessary hardware for easy installation on the Mercury Mercruiser engine. It is also compatible with various belt drive systems, ensuring versatility and adaptability to different marine applications.

Overall, the GM 863077-1 alternator generator is a reliable and powerful solution for providing electrical power to marine applications. Its durable design, high output, and ease of installation make it an essential component for maintaining the electrical systems on a Mercury Mercruiser 4.3 MPI 262 V6 marine boat engine.

The GM 863077-1 08 Mercury Mercruiser 4.3 MPI 262 V6 marine boat engine alternator generator is a crucial component for supplying electrical power to your boat's electrical systems. Let's discuss its pros and cons to help you make an informed decision about purchasing it.

1. OEM Part: This alternator is an original equipment manufacturer (OEM) part, designed and manufactured by General Motors, ensuring a perfect fit and compatibility with your Mercury Mercruiser 4.3 MPI engine.

2. High Output: This alternator delivers a maximum output of 80 amps, providing ample power for most marine applications, including trolling motors, lights, and electronics.

3. Robust Construction: The alternator is built to withstand the harsh marine environment with a corrosion-resistant housing and marine-grade components.

4. Easy Installation: This alternator is designed to be a direct replacement for the original unit, making the installation process straightforward and efficient.

1. Cost: Compared to some aftermarket alternators, the GM OEM alternator may be more expensive. However, the higher cost may be justified due to its superior quality and compatibility.

2. Availability: Due to its being an OEM part, it may not be as widely available as aftermarket alternators from various manufacturers. You may need to check with a Mercury Mercruiser dealer or authorized service center to ensure availability.

3. Limited Warranty: The alternator comes with a limited warranty from General Motors, which may not be as long or comprehensive as some aftermarket alternatives.

In conclusion, the GM 863077-1 08 Mercury Mercruiser 4.3 MPI 262 V6 marine boat engine alternator generator is a reliable and high-performing option for powering your boat's electrical systems. Its OEM design ensures a perfect fit and compatibility with your engine, while its robust construction withstands the marine environment. However, its higher cost and limited availability may be drawbacks for some buyers.

If you prioritize compatibility, reliability, and performance, the GM OEM alternator is an excellent choice. However, if you're looking for a more budget-friendly alternative, you may want to consider aftermarket options from reputable manufacturers. Ultimately, the decision depends on your specific needs, budget, and preferences.

Details:

I will do my best to resolve the issue. Condition: Good used condition. Part was removed from a 2008 MerCruiser 4.3 MPI Marine engine. Thanks -Mike.

Serial Number: 1A085933. Shelf 28-12-4-C. Look at pictures closely and ask any questions, I try to describe parts as best can. What you see in the pictures is what get.

Mounting hardware is only included if it shown in the pictures. Please look at all pictures and read entire before buying.

part #: 8630771 prices

• $85.00-$86.00

specifications otsterndriv:

• for models: Marine, Mercruiser
• for makes: Mercury
• for years: 2008
• brand: Gm
• mpn: 863077-1
• part type: Engine Alternator Generator
• country of origin: United States

payments otsterndriv:

• wallet: Paypal
• credit card: Visa
• other

seller otsterndriv:

• rating: 99.6%
• city: Huron, Ohio
• # reviews: 118268

offer otsterndriv:

• sold: 0
• started: February 25, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home

returns otsterndriv:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

general otsterndriv:

• Boat Parts > Sterndrive Motors Components > Other
• condition: Used

shipping otsterndriv:

• class: Standard, Expedited
• service: FedEx Ground / FedEx Home Delivery, UPS Ground, USPS Ground Advantage, FedEx 2Day
• transit: 2-6 Days
• carrier: FedEx, UPS, USPS
• type: Calculated
• cost: $24.37

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