Remy 12571 Alternator

Remanufactured 150 Amp Alternator for Cadillac

Remy Premium Remanufactured alternator Part Number 12571 is a 12-volt charging system component built for direct-fit applications that use an internal regulator, internal fan, clockwise rotation, and an included pulley. With a 150 amp amperage rating and Nippondenso OE manufacturer design reference, it is built for Cadillac STS and Cadillac SRX charging system service where stable output is required.

Key Features

• 150 amp alternator output for OE-style charging performance
• Remanufactured Remy Premium Remanufactured unit
• 12-volt electrical system application
• Internal voltage regulator and internal fan design
• Pulley included for application-specific replacement
• Clockwise rotation
• OE manufacturer reference: Nippondenso
• Part number 12571 for catalog and cross-reference use

Product Details

Remy 12571 is a remanufactured alternator for vehicles originally equipped with a Nippondenso-style charging system. It is specified for 12V operation with internal regulation and a 150 amp rating, making it a direct replacement choice for drivers servicing the charging system on Cadillac STS and Cadillac SRX models. The Remy Premium Remanufactured line focuses on remanufactured electrical components built to match the original application requirements, and this unit includes the pulley needed for the listed fitments. This part cross-references Nippondenso 104210-3261 and 104210-4340 for the same application.

Vehicle Fitment

• Fits 2005-2010 Cadillac STS, N/A. Compatible with multiple 150 Amp alternator variants; Premium Remanufactured.
• Fits 2004-2009 Cadillac SRX, N/A. Compatible with multiple 150 Amp alternator variants; Premium Remanufactured.

Common Replacement Reasons

• Battery warning light or charging system warning on the dash
• Low system voltage during driving or idle
• Dim lights or electrical accessories operating inconsistently
• Alternator bearing noise or charging output loss
• Failure of the original alternator’s internal regulator or diode circuit

Installation Notes

Verify the vehicle’s original alternator specifications before installation, including amperage rating, rotation direction, regulator type, and pulley configuration. Confirm the application matches Cadillac STS or Cadillac SRX fitment for the listed years, and compare the existing unit to Remy 12571 before removal. Proper belt alignment and electrical connector fit should be checked during installation.

Quality Assurance

Remy Premium Remanufactured electrical components are remanufactured to support OE-style replacement needs for the listed applications. Part number 12571 is built around the original Nippondenso design reference for the specified Cadillac fitments.