Remy 94039 Alternator

Remy 94039 Alternator for Ram Trucks

The Remy 94039 is a new 12-volt alternator built for Ram heavy-duty truck applications that call for a 220 amp charging output. It uses an internal fan, includes the pulley, and is configured with clockwise rotation and an external voltage regulator. This OE-style replacement is built for Ram 2500 and Ram 3500 models across multiple model years.

Key Features

• 220 amp amperage rating for high-demand charging systems
• New alternator, not remanufactured
• 12V electrical system
• Internal fan design
• Pulley included
• Clockwise rotation
• External voltage regulator type
• OE manufacturer reference: Nippondenso

Detailed Description

Remy 94039 is a replacement alternator for Ram and Dodge Ram heavy-duty trucks that require a 220 amp charging unit. It is engineered as a new component and references Nippondenso OE design characteristics, making it a direct-fit option for vehicles originally equipped with this alternator style. The part number 94039 is also cross-referenced with 421000-7001 and 4801313AC for the same application.

Compatible With Ram 2500 and Ram 3500 applications across 2008-2024 model years, including dual alternator system primary alternator configurations and NDenso unit applications where noted. This alternator is a practical replacement when servicing the charging system on Ram 2500, Ram 3500, and Dodge Ram 2500/3500 trucks.

What It Helps Solve

• Low charging output from a worn alternator
• Battery warning light caused by charging system failure
• Dim lights or electrical instability under load
• Charging issues in dual alternator system primary applications
• Replacement needs for Nippondenso-style 220 amp units

Installation Notes and Tips

• Verify the vehicle’s original alternator style, amperage rating, and regulator setup before installation.
• Confirm fitment notes for dual alternator system, primary alternator, and NDenso unit applications.
• Check pulley alignment and belt condition during replacement.
• Inspect battery cables, grounds, and charging circuit connections to avoid repeat failures.

Quality Assurance

Remy New line components are built as new replacement parts for charging system service. The Remy 94039 alternator is specified for confirmed Ram and Dodge Ram fitments and follows the listed OE manufacturer reference and electrical specifications.