MPA Electrical 11251N Alternator

OE-Style Alternator for Select GM and Suzuki Vehicles

The MPA Electrical 11251N is a new 12-volt alternator built as a direct OE replacement with fit, form, and function in mind. It uses an internal regulator, clockwise rotation, and a 6-groove serpentine pulley to match the original charging system layout on supported applications.

Compatible with select Cadillac XTS, Chevrolet Impala, Chevrolet Impala Limited, and Suzuki XL-7 models, this alternator is built for vehicles that require a 170-amp charging output and a Nippondenso-style family design. The MPA Electrical 11251N is a practical choice when replacing a worn or failing alternator on the listed applications.

Key Features

• 12.0-volt alternator with 170.0 amp output
• Internal voltage regulator for integrated charging control
• Clockwise (right) rotation
• Internal fan design
• 6-groove serpentine pulley included
• Decoupled or clutch pulley: No
• Nippondenso family design
• Rear view plug clock position: main mounting ear at 6 o’clock

Detailed Product Information

MPA Electrical 11251N is engineered as a new alternator replacement for vehicles that use the specified OE-style charging system. It is designed around the original mounting and electrical configuration, including the internal regulator and pulley setup, to support proper system operation on the correct application. This part cross-references 31400-78J10 and 15136252 for the same application.

Use this alternator when servicing a 2013-2019 Cadillac XTS, a 2012-2014 Chevrolet Impala, a 2014-2016 Chevrolet Impala Limited, or a 2007-2009 Suzuki XL-7. The part number 11251N is also useful when searching for a replacement alternator with the same 170-amp output and serpentine belt drive configuration.

What This Alternator Helps Address

• Battery warning light caused by charging system failure
• Low system voltage during driving or idle
• Dim headlights or electrical accessories operating inconsistently
• Noise or wear associated with a failing alternator assembly
• Charging output loss from an aging OE unit

Installation Notes and Tips

Confirm the vehicle’s original alternator specifications before installation, including voltage, pulley groove count, rotation direction, and plug orientation. The MPA Electrical 11251N uses an internal regulator and includes the pulley, so verify belt alignment and connector match before final assembly. For best results, inspect the battery, belt condition, and charging circuit after installation to confirm proper system performance.

Quality Assurance

MPA Electrical New alternators are built as OE replacement parts and are tested using current validation methods to help ensure consistent fit and function on the listed applications. Part number 11251N is manufactured to meet the charging-system requirements of the supported Cadillac, Chevrolet, and Suzuki vehicles.