MPA Electrical 11581 Alternator

Remanufactured Alternator for Mercedes-Benz CL550

Restore charging performance with this remanufactured alternator from MPA Electrical. Built for OE fit, form, and function, it is a direct replacement for select 2011-2014 Mercedes-Benz CL550 models and is engineered around the original Valeo-style application.

MPA Electrical’s remanufactured product line combines factory-style fitment with modern remanufacturing and testing methods to help deliver a dependable OE replacement alternator for Mercedes-Benz CL550 charging system service.

• 12.0-volt alternator for standard vehicle charging systems
• Internal fan and internal voltage regulator
• Clockwise (right) rotation
• Includes pulley with 6-groove serpentine belt design
• Decoupled/clutch pulley included
• Valeo family application
• Rear plug clock position: 12 o’clock with mounting ear at 6 o’clock

Detailed Product Overview

This MPA Electrical 11581 alternator is a remanufactured OE replacement for the Mercedes-Benz CL550, covering 2011-2014 model years. It is built to match the original charging system configuration, including 12-volt operation, internal regulation, internal cooling fan design, and clockwise rotation. The included pulley and decoupled clutch pulley support the serpentine belt setup used on this application. Part number 11581 is also referenced for cross-application lookup with select OE and aftermarket numbers.

This part cross-references 014 154 10 02 and FG23S021 for the same application.

What This Alternator Helps Address

• Battery warning light or charging system fault codes
• Low system voltage during driving or idle operation
• Dim lights, slow electrical accessories, or weak charging output
• Alternator noise related to pulley or internal wear
• Starting issues caused by insufficient alternator output

Installation Notes and Tips

Verify pulley groove count, rotation direction, plug clock position, and mounting ear orientation before installation. Confirm the vehicle uses the Valeo-style alternator configuration and a serpentine belt drive. Always inspect the belt, tensioner, and charging connections during replacement to help ensure proper system operation on the Mercedes-Benz CL550.

Quality Assurance

MPA Electrical remanufactured alternators are processed to OE fit, form, and function standards and tested with current remanufacturing and validation methods before release.

Compatible With: 2011-2014 Mercedes-Benz CL550. Part number 11581.