MPA Electrical 13845 Alternator

Remanufactured Alternator for Volvo S40 and V40

MPA Electrical Part Number 13845 is a remanufactured alternator built for select Volvo charging-system applications. It is a 12-volt, 120-amp unit with an internal regulator, internal fan, and a 6-groove serpentine clutch pulley for counterclockwise rotation.

This remanufactured MPA Electrical alternator is a direct-fit charging component for Volvo S40 and Volvo V40 models listed below. It is built around Nippondenso-style specifications and is intended for vehicles that require a 120 amp alternator for the Nippondenso alternator application.

Key Features

• MPA Electrical remanufactured alternator, Part Number 13845
• 120 amps, 12 volts
• Internal regulator and internal fan
• 6-groove serpentine clutch pulley
• Counterclockwise rotation
• Clock position: 10:00
• Manufacturer reference: Nippondenso

Detailed Description

Part Number 13845 is a remanufactured alternator for Volvo charging and starting systems that use the Nippondenso configuration. The 120 amp output supports the vehicle electrical system, while the internal regulator helps manage charging output within the alternator assembly. The 6-groove serpentine clutch pulley and counterclockwise rotation are important match points for proper belt alignment and operation. This part cross-references Dorman - HELP 13845 for the same application.

Compatible With 2003 Volvo S40, N/A; 2000-2002 Volvo S40, N/A; and 2000-2002 Volvo V40, N/A. Search terms such as Volvo S40 alternator 120 amp remanufactured, Volvo V40 Nippondenso alternator replacement, and MPA Electrical 13845 alternator help identify the correct charging component for these applications.

What It Is Used For

• Replacing a failing alternator that is not maintaining proper charging voltage
• Addressing battery warning lights or charging-system fault codes
• Restoring electrical output for lights, accessories, and engine management systems
• Correcting belt-drive issues caused by a mismatched pulley or rotation specification
• Replacing a worn Nippondenso-style alternator on select Volvo S40 and V40 models

Installation Notes and Tips

Verify pulley groove count, rotation direction, clock position, and amperage before installation. Confirm the vehicle uses the Nippondenso alternator configuration and match the application to the listed Volvo S40 and Volvo V40 model years. Inspect the belt, electrical connectors, and charging cables during replacement to help ensure proper system performance.

Quality Assurance

MPA Electrical remanufactured components are rebuilt for charging-system service with application-specific specifications in mind. Part Number 13845 is listed with defined electrical and mounting attributes to support accurate fitment selection for Volvo S40 and Volvo V40 charging system repairs.