MPA Electrical 13979 Alternator

Remanufactured Alternator for Jaguar Charging Systems

This MPA Electrical remanufactured alternator is built for Jaguar charging system service where a 12-volt, 140-amp output is required. It uses an internal regulator, internal fan, and a 6-groove serpentine pulley to match the listed OE-style application details.

Part number 13979 is a remanufactured Nippondenso-style alternator with clockwise rotation and an 8:00 clock position. It is listed for multiple Jaguar models, including XJ8, XJR, XKR, and S-Type applications.

Key Features

• 140 amp output for factory-style charging performance
• 12-volt electrical system application
• Internal regulator for integrated voltage control
• Internal fan design
• 6-groove serpentine pulley
• Clockwise rotation
• 8:00 clock position
• Remanufactured MPA Electrical unit
• Manufacturer type: Nippondenso

Detailed Description

MPA Electrical part number 13979 is a remanufactured alternator intended for Jaguar vehicles that use the specified Nippondenso configuration. The 140 amp rating supports the electrical demands of factory accessories and charging requirements, while the internal regulator helps maintain system voltage within the vehicle’s charging circuit. The 6-groove serpentine pulley and clockwise rotation are important match points for proper belt alignment and operation.

This alternator cross-references BBB Industries 13979 for the same application. It is listed for 2003-2009 Jaguar XK8 and XKR, 2003-2008 Jaguar S-Type, 2004-2009 Jaguar XJ8, 2004-2009 Jaguar XJR, 2004-2009 Jaguar Vanden Plas, 2005-2009 Jaguar Super V8, and 2007-2009 Jaguar XK. For 2003 Jaguar XK8 and XKR, the listing applies from chassis/VIN A30645.

What This Alternator Helps Address

• Battery warning light caused by low charging output
• Dim lights or unstable electrical performance
• Slow cranking after the battery has been charged
• Charging system faults related to worn internal components
• Accessory voltage drop under load

Installation Notes and Tips

Verify pulley groove count, rotation direction, clock position, and regulator style before installation. Confirm the vehicle’s original alternator matches the listed Nippondenso configuration and review the chassis/VIN note for 2003 Jaguar XK8 and XKR applications. Inspect the belt condition, electrical connectors, and charging cables during replacement to help ensure proper system operation.

Quality Assurance

This MPA Electrical remanufactured alternator is built as a service replacement for the listed Jaguar applications and is intended to meet the specified electrical and mounting requirements for direct-fit use.