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          Bilstein 44-291037 - Air Suspension Strut (Front Left)

          MPN: 44-291037
          The Bilstein 44-291037 Air Suspension Strut improves your Mercedes-Benz's handling and comfort. Designed for easy installation and built for lasting durability.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $1079.00
          Out of stock

          Product Overview

          The Bilstein Air Suspension Strut, part number 44-291037, is engineered to provide superior performance and reliability for Mercedes-Benz owners seeking an effective suspension solution. This high-quality strut is designed specifically for vehicles without electronic suspension, ensuring a smooth and comfortable ride even on challenging terrains. Crafted from premium-grade materials, this strut guarantees durability and longevity, making it an ideal investment for enhancing your vehicle's performance. The Bilstein Air Suspension Strut is also highly adjustable, allowing you to customize your suspension system to match your driving style and preferences, giving you the perfect balance between comfort and performance. Installation is straightforward, as this strut fits seamlessly onto your Mercedes-Benz and includes all necessary hardware for a hassle-free setup. You won't need any special tools or expertise, saving you both time and money on labor costs. Choose Bilstein 44-291037 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Bilstein 44-291037 is equivalent to or replaces the following part numbers: 1663202513, 1663204966, 166320496680.

          Vehicle Compatibility

          • Mercedes-Benz GLS450 3.0 V6 (2016–2019)
          • Mercedes-Benz GLS550 4.7 V8 (2016–2019)
          • Mercedes-Benz GLS350d 3.0 V6 (2017)
          • Mercedes-Benz GL350 3.0 V6 Diesel (2014–2019)
          • Mercedes-Benz GL450 3.0 V6 (2015–2019)

          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 Bilstein 44-291037 Air Suspension Strut do?

          The Bilstein Air Suspension Strut is a vital component of your vehicle's suspension system, designed to absorb shocks and provide stability. It ensures a smooth ride by adjusting to varying road conditions.

          How do I know if my Air Suspension Strut needs replacement?

          Common indicators that the air suspension strut may need replacement include excessive bounce while driving, uneven tire wear, a sagging vehicle height, or visible leaks around the strut.

          Can I install the Bilstein 44-291037 myself?

          Yes, the installation of the Bilstein 44-291037 is straightforward for those with basic automotive skills. However, ensure you follow all safety precautions and guidelines during the installation process.

          What are the symptoms of a faulty Air Suspension Strut?

          Symptoms of a faulty air suspension strut may include a bouncy or unstable ride, increased body roll during turns, and an uneven stance of the vehicle. These issues can affect driving comfort and safety.

          Why should I choose Bilstein for my Air Suspension Strut needs?

          Bilstein is known for its high-quality engineering and performance. Order Bilstein 44-291037 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
              3803208
            • Weight
              20 lbs
            • Dimensions (L x W x H)
              38.58 x 9.06 x 9.06 in
            • Barcode
              00651860847931
            • Manufacturer Part #
              44-291037
          • Brand
            Bilstein
          • Manufacturer
            Bilstein
          • MPN
            44-291037
          • Part Type
            Air Suspension Strut
          • Position
            Front Left
          • OE Part Numbers
            166 320 25 13, 1663202513, 166 320 49 66 80, 166320496680, 166 320 49 66, 1663204966
          • Cross Reference Numbers
            44291037
          • Features
            Boot Included : No
            California Proposition 65 : WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov
            Finish : Black Paint
            Internal Design : Monotube
            Lower Mount Type : Clevis
            Series : B4 OE Replacement (Air)
            Spring Seat Included : No
            Title : Bilstein Shock Absorbers
            Upper Mount Type : Special
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2019Mercedes-BenzGLS5504Matic (4.7 V8 GAS)Notes: Without Electronic Suspension
          2019Mercedes-BenzGLS4504Matic (3.0 V6 GAS)Notes: Without Electronic Suspension
          2017Mercedes-BenzGLS350d4Matic (3.0 V6 DIESEL)Notes: Without Electronic Suspension
          2017Mercedes-BenzGLS4504Matic (3.0 V6 GAS)Notes: Without Electronic Suspension
          2017Mercedes-BenzGLS5504Matic (4.7 V8 GAS)Notes: Without Electronic Suspension
          2018Mercedes-BenzGLS5504Matic (4.7 V8 GAS)Notes: Without Electronic Suspension
          2018Mercedes-BenzGLS4504Matic (3.0 V6 GAS)Notes: Without Electronic Suspension
          2016Mercedes-BenzGL4504Matic (3.0 V6 GAS)Notes: Without Electronic Suspension
          2016Mercedes-BenzGL350Bluetec 4Matic (3.0 V6 DIESEL)Notes: Without Electronic Suspension
          2015Mercedes-BenzGL4504Matic (3.0 V6 GAS)Notes: Without Electronic Suspension
          2015Mercedes-BenzGL350Bluetec 4Matic (3.0 V6 DIESEL)Notes: Without Electronic Suspension
          2014Mercedes-BenzGL450Base (4.7 V8 GAS)Notes: Without Electronic Suspension
          2014Mercedes-BenzGL350Bluetec 4Matic (3.0 V6 DIESEL)Notes: Without Electronic Suspension
          2013Mercedes-BenzGL450Base (4.7 V8 GAS)Notes: Without Electronic Suspension
          2013Mercedes-BenzGL350Bluetec 4Matic (3.0 V6 DIESEL)Notes: Without Electronic Suspension
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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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