MACK 20990003 Alternator

( Manufacturer Part Number: 20990003 ), ( Part Type: Alternator )

Review MACK Alternator

The Mack MA-209900-3 is a heavy-duty alternator designed specifically for commercial vehicles and industrial applications. This alternator, manufactured by Mack Diesel Engine Company, is engineered to deliver reliable and consistent power output for extended periods.

This alternator features a robust design with a cast iron housing that ensures durability and resistance to vibrations and harsh operating conditions. It comes equipped with a 21-inch, 3-blade fan that provides efficient cooling, preventing overheating and ensuring optimal performance.

The MA-209900-3 alternator boasts a maximum output of 200 amps at 13.8 volts, making it suitable for powering the electrical systems of large commercial vehicles and industrial equipment. It is also compatible with various Mack engine models, including those with serial numbers starting from MH11130001.

This alternator is equipped with a regulator that maintains a stable voltage level, preventing damage to the batteries and ensuring a long service life. It also includes a diode rectifier that converts the alternating current (AC) generated by the alternator into direct current (DC) for charging the batteries.

The MA-209900-3 alternator is easy to install, with a bolt-on design that minimizes the time and effort required for replacement. It is also designed to be maintenance-friendly, with easily accessible components and a service-friendly design that simplifies routine maintenance tasks.

In summary, the Mack MA-209900-3 alternator is a heavy-duty and reliable power source for commercial vehicles and industrial applications. Its robust design, efficient cooling system, and high output make it an ideal choice for powering the electrical systems of large vehicles and equipment, while its ease of installation and maintenance-friendly design simplify the replacement process.

A Detailed Analysis of the Mack AS6136M Alternator (Mack Part Number: 20990003)

The Mack AS6136M alternator, with Mack part number 20990003, is a critical component in powering heavy-duty vehicles. This alternator is known for its durability and reliability. In this analysis, we will discuss the key features, pros, cons, and a concluding recommendation.

1. 165-amp output

2. 24-volt system

3. Brushless exciter

4. Cast iron housing

5. Three-phase, 12-pole design

1. High output: The Mack AS6136M alternator delivers a substantial 165 amps, ensuring the vehicle's electrical system is well-powered.

2. Brushless exciter: This alternator features a brushless exciter, which results in reduced maintenance requirements and increased lifespan.

3. Robust design: The cast iron housing provides excellent protection against harsh operating conditions, ensuring the alternator can withstand the demands of heavy-duty applications.

1. Weight: Due to its robust design and high power output, the Mack AS6136M alternator is relatively heavy.

2. Cost: The price point for this alternator is higher than some competitors, which could be a consideration for some buyers.

The Mack AS6136M alternator (Mack part number: 20990003) is a high-performance, reliable component designed for heavy-duty applications. Its robust design, high output, and brushless exciter contribute to its durability and minimal maintenance requirements. However, its weight and cost may be drawbacks for some buyers.

Considering the Mack AS6136M alternator's superior performance and reliability, it is an excellent choice for heavy-duty applications where power output and longevity are essential. While the higher cost and weight may be a concern for some, the benefits of this alternator typically outweigh these considerations. If you require a heavy-duty alternator that can deliver consistent power output and withstand demanding conditions, the Mack AS6136M alternator is an excellent investment.

Details:

Manufactured following strict OE standards to work like the original component. Made of high-quality components for durability, reliability, and performance. Designed specifically for trucks, trailers, and buses. Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle.

Engineered using the latest technology to ensure product lasts longer in service. Fits Mack 20990003 Alternator: Part Number: Manufacturer.

part #: 20990003 price

• $720.07

specifications altnagen:

• for makes: Mack
• mpn: 20990003
• part type: Alternator

payments altnagen:

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

offer altnagen:

• best offers: True
• quantity: 1
• started: March 3, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock

shipping altnagen:

• service: Standard
• type: Fixed
• class: Standard
• cost: $0.00
• transit: 3-7 Days

seller altnagen:

• # reviews: 65997
• rating: 99.3%
• city: Los Angeles, California

general altnagen:

• condition: New
• Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > Alternators Generators

returns altnagen:

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

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