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          Genuine Mercedes-Benz 1772003400 - Accessory Drive Belt Tensioner Assembly

          MPN: 1772003400
          The Genuine Mercedes-Benz 1772003400 Accessory Drive Belt Tensioner Assembly ensures optimal tension for efficient engine operation. Designed for easy installation and durable performance.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $194.20
          Out of stock

          Product Overview

          Keep your Mercedes-Benz running smoothly with the Genuine Mercedes-Benz Accessory Drive Belt Tensioner Assembly, part number 1772003400. This high-quality tensioner assembly is engineered to OEM standards, ensuring optimal performance and longevity for a variety of Mercedes-Benz models. With its durable design and premium-grade construction, this accessory drive belt tensioner assembly is built to withstand even the toughest driving conditions. Its smooth operation minimizes wear and tear on your vehicle's engine, reducing the risk of costly repairs down the road. Choose Genuine Mercedes-Benz 1772003400 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Genuine Mercedes-Benz 1772003400 is equivalent to or replaces the following part numbers: 1772003400.

          Vehicle Compatibility

          • Mercedes-Benz SL55 AMG 4.0 V8 (2021–2022)
          • Mercedes-Benz SL63 AMG 4.0 V8 (2021–2022)
          • Mercedes-Benz G63 AMG 4.0 V8 (2021)
          • Mercedes-Benz G550 4.0 V8 (2021–2022)
          • Mercedes-Benz AMG GT 63 S 4.0 V8 (2021)
          • Mercedes-Benz AMG GT 63 4.0 V8 (2021)
          • Mercedes-Benz AMG GT 4.0 V8 (2021)
          • Mercedes-Benz AMG GT C 4.0 V8 (2021)
          • Mercedes-Benz C63 AMG S 4.0 V8 (2015–2021)
          • Mercedes-Benz E63 AMG S 4.0 V8 (2017–2021)

          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.
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          • Established Trust: Serving the European auto community since 2000.

          Frequently Asked Questions

          What does the Genuine Mercedes-Benz 1772003400 Accessory Drive Belt Tensioner Assembly do?

          The accessory drive belt tensioner assembly maintains proper tension on the alternator belt, ensuring efficient engine operation. It helps prevent belt slippage and wear, which can lead to engine performance issues.

          How do I know if my Accessory Drive Belt Tensioner Assembly needs replacement?

          Common signs include squeaking or chirping noises from the engine, visible wear or damage on the belt, and decreased performance of electrical components powered by the alternator.

          Can I install the Genuine Mercedes-Benz 1772003400 myself?

          Yes, this tensioner assembly is designed for easy installation and does not require special tools or expertise. Simply follow the included instructions to replace your old or worn-out tensioner assembly.

          What are the symptoms of a faulty Accessory Drive Belt Tensioner Assembly?

          Symptoms of a faulty tensioner assembly include abnormal noises from the engine, belt wear, and potential electrical issues caused by alternator malfunction. It is critical to address these issues promptly to avoid further damage.

          Why should I choose Genuine Mercedes-Benz for my Accessory Drive Belt Tensioner Assembly needs?

          Genuine Mercedes-Benz parts, like the 1772003400, ensure a factory-correct replacement that restores safety and performance. Order Genuine Mercedes-Benz 1772003400 today for reliable quality and peace of mind.

          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
              2373666
            • Weight
              3.7 lbs
            • Dimensions (L x W x H)
              7.2281 x 3.834 x 5.0669 in
            • Manufacturer Part #
              1772003400
          • Brand
            Genuine Mercedes-Benz
          • Manufacturer
            Genuine Mercedes-Benz
          • MPN
            1772003400
          • Part Type
            Accessory Drive Belt Tensioner Assembly
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2018Mercedes-BenzC63 AMG SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzGLC63 AMG S4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzS560Base (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzS5604Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzS63 AMG4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzG550 4x4Base (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzC63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzE63 AMG S4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzG550Base (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzMaybach S5604Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2018Mercedes-BenzGLC63 AMG4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzS5604Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzS560Base (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzG550Base (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzG63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzMaybach S5604Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzC63 AMG SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzAMG GT 63Base (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzGLC63 AMG S4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzC63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzAMG GT 63 SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzAMG GT RBase (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzS63 AMG4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzGLC63 AMG4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2019Mercedes-BenzAMG GT CBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzGLC63 AMG4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzC63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzG550Base (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzG63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzS560Base (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzS5604Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzAMG GT R ProBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzAMG GT CBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzGLC63 AMG S4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzMaybach S5604Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzC63 AMG SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzAMG GT RBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzAMG GT 63 SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzAMG GT 63Base (4.0 V8 GAS)Notes: For Alternator Belt
          2020Mercedes-BenzS63 AMG4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2017Mercedes-BenzG550Base (4.0 V8 GAS)
          2017Mercedes-BenzG550 4x4Base (4.0 V8 GAS)
          2017Mercedes-BenzC63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2017Mercedes-BenzC63 AMG SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzC63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzE63 AMG S4Matic+ (4.0 V8 GAS)Notes: 4.0 LITER
          2021Mercedes-BenzAMG GT Black SeriesBase (4.0 V8 GAS)Notes: GT BLACK SERIES
          2021Mercedes-BenzG550Base (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzAMG GT 63Base (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzAMG GT 63 SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzGLC63 AMG S4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzG63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzAMG GTBase (4.0 V8 GAS)Notes: 2018-22 GT, GT S
          2021Mercedes-BenzS5604Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzS560Base (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzAMG GT CBase (4.0 V8 GAS)Notes: GT C, GT R
          2021Mercedes-BenzS63 AMG4Matic (4.0 V8 GAS)Notes: 4.0 LITER S63, serpentine belt
          2021Mercedes-BenzC63 AMG SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2021Mercedes-BenzGLC63 AMG4Matic (4.0 V8 GAS)Notes: For Alternator Belt
          2022Mercedes-BenzSL55 AMG4Matic (4.0 V8 GAS)Notes: #2
          2022Mercedes-BenzSL63 AMG4Matic (4.0 V8 GAS)Notes: #2
          2016Mercedes-BenzC63 AMG SBase (4.0 V8 GAS)Notes: For Alternator Belt
          2016Mercedes-BenzC63 AMGBase (4.0 V8 GAS)Notes: For Alternator Belt
          2016Mercedes-BenzG550Base (4.0 V8 GAS)
          2015Mercedes-BenzC63 AMG SBase (4.0 V8 GAS)Notes: For Alternator Belt
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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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