YANMAR 128990-77250 Alternator 12V/125A

( Brand: Yanmar ), ( Manufacturer Part Number: 128990-77250 ), ( Part Type: Alternator ), ( Warranty: 1 Year )

Review YANMAR 12v/125a Alternator #128990-77250

Yanmar 128990-77250 12V/125A Alternator - Reliable Power Source for Your Yanmar Marine Engine

The Yanmar 128990-77250 12V/125A Alternator is a high-performing, dependable power solution designed specifically for Yanmar marine engines. This alternator is engineered to deliver a consistent 125 amps of output at 12 volts, ensuring a reliable charge for your engine's batteries and auxiliary equipment.

This Yanmar alternator boasts a robust construction, with a durable cast-aluminum housing that resists corrosion and wear, even in the harshest marine environments. The alternator is equipped with a regulator that maintains the ideal voltage, preventing damage to the batteries and ensuring optimal performance.

The alternator features a self-exciting design, eliminating the need for an external voltage source to start the alternator. It also includes a diode that ensures reverse power does not flow back into the engine, further protecting your Yanmar marine engine.

The Yanmar 128990-77250 12V/125A Alternator is designed for easy installation, with a bolt-on mounting bracket that fits most Yanmar marine engines. The alternator is also equipped with a belt guard to protect the belt and pulley system from debris, ensuring longevity and reliability.

In summary, the Yanmar 128990-77250 12V/125A Alternator is a high-quality, dependable power source for your Yanmar marine engine. Its robust construction, self-exciting design, and easy installation make it an ideal choice for boat owners who demand reliability and performance from their marine power systems.

1. High Output: This alternator provides a high output of 125 amps, which is suitable for larger engines and heavy-duty applications, ensuring consistent battery charging.

2. Reliable Brand: Yanmar is a well-known and reputable brand in the marine and industrial sectors, known for their durability and reliability.

3. Regulated Voltage: The regulated voltage output ensures consistent voltage delivery to the battery, preventing damage to the battery or electrical systems.

4. Compact Design: Despite its high output, this alternator has a compact design, making it easier to install and reducing the overall size of your electrical system.

1. High Cost: Compared to some other alternators in the market, this one is relatively expensive, which might be a disadvantage for those on a budget.

2. Potential for Noise: High-output alternators like this one can be noisy, which might be a concern for those looking for a quieter operation.

3. May Require Additional Wiring: Depending on your current electrical system, you may need to upgrade or change your wiring to accommodate this high-output alternator.

The Yanmar 128990-77250 12v/125a Alternator is a reliable and high-output solution for those who need a powerful alternator for larger engines or heavy-duty applications. However, its high cost and potential for noise may be a deterrent for some users. If budget is not a concern and noise level is manageable, this alternator could be a good choice. If you're on a budget or noise sensitivity is a concern, you might want to consider alternatives with lower output or different brands. Always ensure you have the necessary knowledge or professional assistance for installation and maintenance.

Details:

The Yanmar 12V/125A Alternator # is a high-quality automotive component designed specifically for vehicles. Trust in the Yanmar brand for durable and efficient automotive parts. With a 12V output and 125A capacity, this alternator is capable of providing ample power for your vehicles electrical systems.

part #: 12899077250 prices

• $200.68-$230.52

specifications ignitionstartin:

• brand: Yanmar
• mpn: 128990-77250
• part type: Alternator
• warranty: 1 Year

offer ignitionstartin:

• options: Ship-to-home
• started: June 24, 2025
• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1

returns ignitionstartin:

• policy: No Returns

general ignitionstartin:

• Boat Parts > Inboard Engines Components > Ignition Starting Systems
• condition: New other see details

shipping ignitionstartin:

• transit: 3-8 Days
• carrier: USPS
• type: Calculated
• service: USPS Priority Mail
• class: Expedited
• cost: $17.85

seller ignitionstartin:

• # reviews: 0
• city: Annapolis, Maryland
• rating: 0.0%

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• other
• credit card: Visa
• wallet: Google-pay

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