MPA Electrical 13990 Alternator

Remanufactured Alternator for Discovery

This remanufactured MPA Electrical alternator is built for 12-volt charging systems and delivers 120 amps for the 2003-2004 Land Rover Discovery with a Valeo alternator application. Part number 13990 is a direct-fit electrical replacement for vehicles using an internal regulator, internal fan, clockwise rotation, and no pulley.

Key Features

• Remanufactured alternator from MPA Electrical
• 120 amp output for 12-volt charging systems
• Internal regulator and internal fan design
• Clockwise rotation
• Without pulley
• Valeo manufacturer application
• Clock position: 1:00
• Part number 13990

Detailed Product Overview

MPA Electrical part number 13990 is a remanufactured alternator engineered for the Land Rover Discovery in 2003 and 2004 when equipped with a Valeo alternator. It matches the listed electrical and mounting configuration, including 120 amps, 12 volts, internal regulation, internal cooling fan, clockwise rotation, and no pulley. This makes it a practical replacement for restoring charging performance in the Discovery’s starting and charging system.

This part cross-references Valeo 439468 for the same application. It also aligns with interchange references used for this fitment, including BBB Industries 13990. If you are searching for a remanufactured alternator for 2003-2004 Land Rover Discovery, part number 13990 is the catalog reference to use.

What This Alternator Helps Address

• Battery warning light caused by weak charging output
• Low system voltage during driving or idle
• Dim lights or electrical accessories operating inconsistently
• Charging system failure on a 2003-2004 Land Rover Discovery
• Replacement needs for a Valeo-style alternator setup

Installation Notes and Tips

Fits 2003-2004 Land Rover Discovery, N/A, with Valeo alternator. Confirm the vehicle uses the listed 1:00 clock position, internal regulator, internal fan, clockwise rotation, and no pulley before installation. Verify belt drive and electrical connections against the original unit, and compare the existing alternator to part number 13990 to confirm match before removal.

Quality Assurance

MPA Electrical remanufactured components are rebuilt to meet the specifications listed for the application, including output, rotation, and regulator configuration. For buyers comparing charging system parts for Land Rover Discovery models, part number 13990 provides a specification-matched replacement for the stated Valeo application.