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          Valeo 439842 - Alternator

          MPN: 439842
          The Valeo 439842 Alternator ensures efficient power generation for your Mercedes-Benz, maintaining the electrical system's performance. Built to OEM standards for durability.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $603.95
          In stock

          Product Overview

          The Valeo Alternator 439842 is engineered to meet OEM standards, providing reliable and efficient power generation for your Mercedes-Benz vehicle. As the original equipment supplier for many models, Valeo ensures that their alternators deliver the performance you expect, with premium-grade construction that stands the test of time. This alternator is designed to convert the mechanical energy from your engine into electrical energy, supplying power to the battery and electrical systems of your vehicle. A properly functioning alternator generates close to 14 volts; if your vehicle's voltage drops below 12 volts, it indicates a potential charging issue that needs immediate attention. Choose Valeo 439842 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Valeo 439842 is equivalent to or replaces the following part numbers: 0009061722, 000906172280, 10326, 11248, CG20U011.

          Vehicle Compatibility

          • Mercedes-Benz SL450 3.0 V6 (2017–2020)
          • Mercedes-Benz E450 3.0 V6 (2019–2020)
          • Mercedes-Benz GLE400 3.0 V6 (2016–2019)
          • Mercedes-Benz E400 3.0 V6 (2016–2019)
          • Mercedes-Benz CLS400 3.0 V6 (2016–2018)
          • Mercedes-Benz ML400 3.0 V6 (2015)
          • Mercedes-Benz C400 3.0 V6 (2015)
          • Mercedes-Benz SL400 3.0 V6 (2015)

          This may also fit other applications. Please use the vehicle selector tool to verify fitment.

          Why Shop at eEuroparts.com?

          • Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
          • Exclusive Kits That Fitâ„¢ - complete repair solutions with no guesswork
          • Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
          • Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
          • Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
          • Established Trust: Serving the European auto community since 2000.

          Frequently Asked Questions

          What does the Valeo 439842 Alternator do?

          The alternator is a crucial component of your vehicle's electrical system. It converts mechanical energy from the engine into electrical energy, charging the battery and powering the vehicle's electrical systems while the engine is running.

          How do I know if my Alternator needs replacement?

          Common signs of a failing alternator include dimming headlights, electrical issues, warning lights on the dashboard, and a dead battery. If you notice these symptoms, it may be time to inspect or replace your alternator.

          Can I install the Valeo 439842 myself?

          Yes, the installation of the Valeo 439842 alternator can be a DIY project if you have the necessary tools and mechanical knowledge. However, be sure to follow safety precautions and consult your vehicle's service manual for detailed instructions.

          What are the symptoms of a faulty Alternator?

          Symptoms of a faulty alternator include flickering lights, electrical malfunctions, battery warning light activation, and difficulty starting the engine. If you experience these issues, it may indicate a failing alternator.

          Why should I choose Valeo for my Alternator needs?

          Valeo is a trusted brand known for its quality and reliability in the automotive industry. Order Valeo 439842 today for a factory-correct replacement that restores safety and performance.

          Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.

            • eEuroparts SKU
              31800
            • Weight
              16.89 lbs
            • Dimensions (L x W x H)
              8.74 x 7.87 x 10.35 in
            • Barcode
              03276424398420
            • Manufacturer Part #
              439842
          • Brand
            Valeo
          • Manufacturer
            Valeo
          • MPN
            439842
          • Part Type
            Alternator
          • OE Part Numbers
            906172280, 9061722, 000906172280, 0009061722
          • Cross Reference Numbers
            10326, CG20U011, 11248
          • Features
            Amperage Rating : 200
            California Proposition 65 : WARNING: N/A for this product.
            Family : Valeo OE
            Fan Type : Internal
            Housing Material : Aluminium
            Pulley Diameter : 55
            Pulley Groove Quantity : 6
            Rotation Direction : Clockwise
            Technical Number : CG20U011
            Voltage : 12
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2019Mercedes-BenzE450Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.823, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2019Mercedes-BenzE4504Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.823, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2019Mercedes-BenzGLE4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.821, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2019Mercedes-BenzSL450Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.825, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2015Mercedes-BenzE4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2015Mercedes-BenzE400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2015Mercedes-BenzCLS4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2015Mercedes-BenzCLS400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2015Mercedes-BenzSL400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.825, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2015Mercedes-BenzML4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.821, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2015Mercedes-BenzC4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.823, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2016Mercedes-BenzGLE4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.821, Engine: OM 642, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2016Mercedes-BenzSL400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.825, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2016Mercedes-BenzCLS4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2016Mercedes-BenzCLS400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2016Mercedes-BenzE400Base (3.0 V6 GAS)Aspiration: Turbocharged, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP, Engine: 276.820
          2016Mercedes-BenzE4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP, Engine: 276.820
          2017Mercedes-BenzE400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2017Mercedes-BenzE4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2017Mercedes-BenzCLS400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2017Mercedes-BenzCLS4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.820, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2017Mercedes-BenzGLE4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.821, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2017Mercedes-BenzSL450Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.825, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2018Mercedes-BenzSL450Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.825, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2018Mercedes-BenzE4004Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.823, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2018Mercedes-BenzE400Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.823, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2020Mercedes-BenzE450Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.823, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2020Mercedes-BenzE4504Matic (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.823, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
          2020Mercedes-BenzSL450Base (3.0 V6 GAS)Aspiration: Turbocharged, Engine: 276.825, Valves: 24, Notes: Valeo is the Original Equipment Manufacturer, 200 AMP, Valeo is the Original Equipment Manufacturer, 200 AMP
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          Warranty Overview

          At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.

          Standard Warranty – Most Parts

          • Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.

          • Protection: Defects in materials or workmanship under normal personal use.

          • Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.

          • Exclusions:

            • Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)

            • Commercial, fleet, rideshare, off-road, or racing use

            • Improper installation, misuse, accidents, or modifications

          • Not Covered: Labor, shipping, towing, or incidental costs.

          Bison Performance Warranty – Our House Brand

          • Coverage: Limited Lifetime Warranty for as long as you own your vehicle.

          • Applies To: All products sold under the Bison Performance label.

          • Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.

          • Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).

          • What’s Included: Replacement of the defective product (labor and shipping excluded).

          Warranty Claim Requirements

          To keep claims fast and fair, we require:

          • Proof of purchase (invoice or order confirmation).

          • Photos or videos showing the defective part, order number, date, VIN, and odometer reading.

          • Diagnostic reports or part returns for non-visible issues may be requested.

          • Claims must be truthful, properly documented, and reflect normal consumer use.

          Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.

          For full details and exclusions, please see our complete Warranty Terms & Conditions.

          This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.

          Return Policy Overview

          Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
          To start a return, contact customer support via Chat or Contact Us.

          • Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)

          • Refunds: Issued to your original payment method within 3–5 business days after inspection

          • Exchanges: Not automatic — please return and reorder

          • Replacements: May be approved for incorrect or defective items reported within 7 days

          Not returnable:

          • Used or installed parts

          • Electrical components

          • Opened filter kits, gaskets, or contaminated items

          • Final sale or custom orders

          Important Notes:

          • Return shipping is your responsibility unless we made a verified error

          • Fitment is the customer’s responsibility (we can assist, but do not guarantee)

          • Country of origin may vary and is not grounds for return

          For complete details, please see our full Return Policy.


          This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.

          Fast, Reliable Shipping — Straight to Your Door

          We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.

          • We use trusted carriers like UPS, FedEx, and USPS.

          • Tracking info is emailed to you as soon as your order ships.

          • Delivery estimates at checkout are based on carrier data, but not guaranteed.

          Need help with a shipment?

          If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.

          For complete details, please see our full Shipping Policy.


          This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.

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