Remy 12580 Alternator

Remy 12580 Premium Remanufactured Alternator

The Remy 12580 is a premium remanufactured 12-volt alternator built for Jaguar charging-system applications that require a 140 amp output. It uses an internal regulator, internal fan, clockwise rotation, and includes the pulley for a direct-fit replacement approach.

Remy Premium Remanufactured parts are rebuilt to restore dependable electrical performance while matching OE-style specifications for the original Nippondenso design. This alternator is a practical choice for Jaguar S-Type, XJ8, XJR, XK8, XKR, and Vanden Plas models that need stable charging output.

Key Features

• 140 amp alternator output for Jaguar charging systems
• 12V electrical system with internal voltage regulator
• Internal fan design and clockwise rotation
• Pulley included for OE-style replacement fitment
• Premium remanufactured construction
• OE manufacturer reference: Nippondenso
• Cross-reference part numbers include 2W93-10300-AA and 104210-3081

Detailed Description

Remy part number 12580 is a premium remanufactured alternator engineered for select Jaguar vehicles with a 140 amp charging requirement. It is built around the original Nippondenso application profile and uses an internal regulator to maintain system voltage under normal electrical load. For shoppers searching for a Jaguar S-Type alternator, Jaguar XJ8 alternator, or Jaguar XK8 alternator, this unit matches the listed OE-style configuration and fitment.

This part cross-references 2W93-10300-AA and 104210-3081 for the same application. The Remy 12580 also serves as a direct replacement option for drivers looking for a remanufactured Jaguar charging component with the correct pulley, rotation direction, and voltage rating.

Vehicle Fitment

• Fits 2002 Jaguar S-Type, N/A — 140 Amps; Premium Remanufactured
• Fits 2003-2004 Jaguar S-Type, N/A — 140 Amp Alternator; Premium Remanufactured
• Fits 2004 Jaguar Vanden Plas, N/A — To Chassis G31700; 140 Amps; Premium Remanufactured
• Fits 2004 Jaguar XJ8, N/A — 140 Amp Alternator; Premium Remanufactured
• Fits 2004 Jaguar XJR, N/A — 140 Amp Alternator; Premium Remanufactured
• Fits 2003-2004 Jaguar XK8, N/A — 140 Amp Alternator; Premium Remanufactured
• Fits 2003-2004 Jaguar XKR, N/A — 140 Amp Alternator; Premium Remanufactured

Common Problems This Part Can Address

• Low charging voltage from a worn alternator
• Battery warning light caused by charging-system failure
• Dim lights or electrical instability under load
• Battery drain after the engine is running
• Noise or inconsistent output from a failing alternator assembly

Installation Notes and Tips

Verify the vehicle’s original alternator specifications before installation, including amperage rating, pulley configuration, rotation direction, and regulator type. Confirm the chassis note for 2004 Jaguar Vanden Plas applications, since fitment is limited to vehicles up to chassis G31700. Inspect the charging belt, electrical connectors, and battery condition during replacement to help ensure proper system operation.

Quality Assurance

This Remy Premium Remanufactured alternator is remanufactured to OE-style specifications for the listed Jaguar applications and is intended to restore charging performance with the correct electrical and mechanical configuration.