MACK 631130086 Alternator Relay Nos

( Manufacturer Part Number: 631130086 ), ( Part Type: Alternator )

Review MACK Alternator Relay Nos

The Mack 631130086 alternator relay is an essential component in the electrical system of Mack trucks. This heavy-duty relay is specifically designed to control the alternator, allowing it to charge the battery when the engine is running.

The alternator relay is built to withstand the rigors of commercial truck use. It features a robust housing made of high-quality materials that can resist vibration and harsh environmental conditions. The contacts on the relay are made of long-lasting material, ensuring consistent performance over time.

The Mack 631130086 alternator relay operates using a 12-volt electrical system. It has a current rating of 20 amps, making it capable of handling the demanding electrical requirements of Mack trucks. The relay also features a built-in diode that allows for proper battery charging and prevents the alternator from rotating in reverse during engine cranking.

The alternator relay is easy to install, with clear markings on the relay housing indicating the proper terminal connections. The relay comes with mounting hardware, making installation a straightforward process. The relay is also designed to be serviceable, with easily accessible terminals and a removable cover for easy access to the internal components.

In the event of a relay failure, the Mack 631130086 alternator relay can be replaced quickly and easily, minimizing downtime for the truck. The relay's durable construction and reliable performance make it an essential component for Mack truck owners, ensuring their vehicles can continue to operate efficiently and effectively on the road.

The Mack 631130086 alternator relay is a crucial component in the charging system of Mack trucks. It is responsible for supplying power to the alternator, which in turn charges the battery and powers the electrical system of the vehicle. Here are some pros and cons of buying this specific relay:

1. OEM Part: This relay is a direct replacement part for Mack trucks, ensuring a perfect fit and function.

2. Enhanced Performance: The Mack 631130086 alternator relay offers improved performance, providing a stable power supply to the alternator and preventing voltage drops.

3. Long Lasting: Mack is known for manufacturing high-quality parts, and this relay is no exception. It is built to last longer than aftermarket alternatives, reducing the need for frequent replacements.

1. Cost: Compared to aftermarket alternatives, the Mack 631130086 alternator relay can be more expensive.

2. Availability: Due to its OEM status, this relay may not be as easily available as aftermarket alternatives from various retailers.

In conclusion, the Mack 631130086 alternator relay offers several benefits, such as guaranteed fit and function, enhanced performance, and long-lasting durability. However, its cost and availability may be a drawback for some consumers.

If you are looking for a reliable and high-performing alternator relay for your Mack truck, the Mack 631130086 is an excellent choice. Its OEM quality and long-lasting design make it a worthwhile investment, despite the potential cost and availability concerns. Consider purchasing this relay from a trusted Mack parts dealer to ensure authenticity and availability.

Details:

All parts are in stock and ready to ship. If the original package is included it may show signs of wear. Pictures: Thumbnails. Alternator Relay is new and in good condition, original packaging.

Mack 631130086 Alternator Relay NOS. Items are shipped using USPS, UPS, and FedEx.

part #: 631130086 price

• $16.06

specifications altnagen:

• for makes: Mack
• mpn: 631130086
• part type: Alternator

returns altnagen:

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

offer altnagen:

• best offers: True
• started: January 24, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• sold: 0

seller altnagen:

• # reviews: 125236
• rating: 99.9%
• city: Ashaway, Rhode Island

shipping altnagen:

• carrier: USPS, UPS
• cost: $0.00
• class: Standard, Expedited, One-day
• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• transit: 4-9 Days

payments altnagen:

• wallet: Paypal
• credit card: Visa
• other

general altnagen:

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

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