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          Genuine BMW 11287549557 - Accessory Drive Belt Idler Pulley

          MPN: 11287549557
          The Genuine BMW 11287549557 Accessory Drive Belt Idler Pulley ensures proper tension and alignment of the serpentine belt, vital for efficient engine operation. Designed to meet OEM standards for reliability.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $59.98
          In stock

          Product Overview

          The Genuine BMW Accessory Drive Belt Idler Pulley (MPN: 11287549557) is a vital component designed to maintain the proper tension and alignment of your vehicle's serpentine belt. This idler pulley ensures that the belt operates smoothly, which is critical for the optimal performance of your engine accessories. Engineered to OEM standards, this part provides premium-grade construction that meets the high expectations of BMW owners and technicians alike. Choose Genuine BMW 11287549557 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Genuine BMW 11287549557 is equivalent to or replaces the following part numbers: 11 28 7 549 557, 11287549557.

          Vehicle Compatibility

          • BMW 550i 4.8 V8 (2006–2010)
          • BMW 650i 4.8 V8 (2006–2010)
          • BMW 750i 4.8 V8 (2006–2008)
          • BMW 750Li 4.8 V8 (2006–2008)
          • BMW Alpina B7 4.4 V8 (2007–2008)
          • BMW 545i 4.4 V8 (2004–2005)
          • BMW 645Ci 4.4 V8 (2004–2005)
          • BMW 745i 4.4 V8 (2004–2005)
          • BMW 745Li 4.4 V8 (2004–2005)
          • BMW X5 4.4i (2004–2005)
          • BMW X5 4.8is (2004–2006)

          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 Fit™ - 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 Genuine BMW 11287549557 Accessory Drive Belt Idler Pulley do?

          The Drive Belt Idler Pulley maintains the tension and alignment of the serpentine belt in your vehicle, ensuring that all connected engine components operate efficiently and effectively.

          How do I know if my Accessory Drive Belt Idler Pulley needs replacement?

          Common signs that the Drive Belt Idler Pulley may need replacement include unusual noises from the engine area such as squeaking or grinding, visible wear on the belt, or if the serpentine belt has come loose or is showing signs of slippage.

          Can I install the Genuine BMW 11287549557 myself?

          Yes, the installation of the Accessory Drive Belt Idler Pulley can be a DIY project for those with automotive knowledge. However, it's important to follow proper procedures to ensure correct installation and avoid potential issues.

          What are the symptoms of a faulty Accessory Drive Belt Idler Pulley?

          Symptoms of a faulty idler pulley may include abnormal noises from the engine area, erratic belt movement, or a belt that appears loose. If you experience these symptoms, it may indicate a failing idler pulley.

          Why should I choose Genuine BMW for my Accessory Drive Belt Idler Pulley needs?

          Genuine BMW parts are known for their quality and reliability, ensuring a perfect fit and performance. Order Genuine BMW 11287549557 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
              948000
            • Weight
              0.34 lbs
            • Dimensions (L x W x H)
              4.131 x 2.1434 x 3.7868 in
            • Manufacturer Part #
              11287549557
          • Brand
            Genuine BMW
          • Manufacturer
            Genuine BMW
          • MPN
            11287549557
          • Part Type
            Accessory Drive Belt Idler Pulley
          • OE Part Numbers
            11 28 7 549 557, 11287549557
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2004BMW545iBase (4.4 V8 GAS)
          2004BMW645CiBase (4.4 V8 GAS)
          2004BMW745iBase (4.4 V8 GAS)
          2004BMWX54.8is (4.8 V8 GAS)
          2004BMWX54.4i (4.4 V8 GAS)
          2004BMW745LiBase (4.4 V8 GAS)
          2006BMW750iBase (4.8 V8 GAS)
          2006BMWX54.8is (4.8 V8 GAS)
          2006BMWX54.4i (4.4 V8 GAS)
          2006BMW650iBase (4.8 V8 GAS)
          2006BMW750LiBase (4.8 V8 GAS)
          2006BMW550iBase (4.8 V8 GAS)
          2007BMW550iBase (4.8 V8 GAS)
          2007BMW650iBase (4.8 V8 GAS)
          2007BMW750LiBase (4.8 V8 GAS)
          2007BMWAlpina B7Base (4.4 V8 GAS)Notes: For Serpentine Belt
          2007BMW750iBase (4.8 V8 GAS)
          2005BMW545iBase (4.4 V8 GAS)
          2005BMW745iBase (4.4 V8 GAS)
          2005BMW645CiBase (4.4 V8 GAS)
          2005BMWX54.4i (4.4 V8 GAS)
          2005BMWX54.8is (4.8 V8 GAS)
          2005BMW745LiBase (4.4 V8 GAS)
          2009BMW550iBase (4.8 V8 GAS)
          2009BMW650iBase (4.8 V8 GAS)
          2008BMW550iBase (4.8 V8 GAS)
          2008BMW750LiBase (4.8 V8 GAS)
          2008BMWAlpina B7Base (4.4 V8 GAS)Notes: For Serpentine Belt
          2008BMW650iBase (4.8 V8 GAS)
          2008BMW750iBase (4.8 V8 GAS)
          2010BMW650iBase (4.8 V8 GAS)
          2010BMW550iBase (4.8 V8 GAS)
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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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