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          Moog RK621945 - Suspension Control Arm and Ball Joint Assembly (Front Lower Forward)

          MPN: RK621945
          The Moog RK621945 Suspension Control Arm and Ball Joint Assembly ensures optimal handling and stability for your BMW. Designed for precise fitment and long-lasting durability.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $58.95
          In stock

          Product Overview

          The Moog Suspension Control Arm and Ball Joint Assembly part number RK621945 is a premium-grade replacement component designed specifically for BMW vehicles. This assembly is engineered to meet or exceed OEM standards, ensuring durability and optimal performance. Crafted from high-quality materials, it guarantees a precise fit, making installation seamless and hassle-free. One of the standout features of this control arm and ball joint assembly is its ability to enhance vehicle stability and control. Designed to absorb shocks effectively, it minimizes noise and vibration, ultimately improving your BMW's handling and driving experience. This vital component aids in maintaining proper suspension geometry, which prolongs the lifespan of your vehicle's suspension system and helps mitigate the risk of costly repairs. Choose Moog RK621945 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Moog RK621945 is equivalent to or replaces the following part numbers: ACDelco 45D10243, BMW 31126768983, BMW 31126768984, BMW 31126768989, BMW 3112678989, Delphi TC3230, Delphi TC3231, Dorman 524-479, Dorman 524-480, Dorman 524-526, Febi-Bilstein 40821, Febi-Bilstein 40822, MAS Industries CB14185, Mevotech CMS101105.

          Vehicle Compatibility

          This part fits some of the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility.

          • BMW X1 sDrive28i 2.0L4 (2013–2014)
          • BMW X1 xDrive28i 2.0L4 (2013–2014)
          • BMW X1 xDrive35i 3.0L6 (2013–2014)
          • BMW 328i xDrive 3.0L6 (2010–2013)
          • BMW 335i xDrive 3.0L6 (2010–2013)
          • BMW 328xi 3.0L6 (2006–2008)
          • BMW 335xi 3.0L6 (2007–2008)
          • BMW 330xi 3.0L6 (2006)

          This may also fits 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 Moog RK621945 Suspension Control Arm and Ball Joint Assembly do?

          The Suspension Control Arm and Ball Joint Assembly is a crucial component of your vehicle's suspension system. It connects the chassis to the wheels, allowing for controlled movement while maintaining alignment and stability, which is essential for safe handling and ride quality.

          How do I know if my Suspension Control Arm and Ball Joint Assembly needs replacement?

          Common symptoms of a failing control arm include excessive tire wear, clunking noises during turns, and a noticeable decrease in handling stability. If you experience any of these issues, it may be time to replace your Moog RK621945 control arm and ball joint assembly.

          Can I install the Moog RK621945 myself?

          Yes, you can install the Moog RK621945 yourself if you have basic automotive knowledge and tools. However, it is essential to follow proper installation procedures and torque specifications for safety and optimal performance.

          What are the symptoms of a faulty Suspension Control Arm and Ball Joint Assembly?

          Common symptoms of a faulty control arm include poor handling, uneven tire wear, and unusual noises when turning. If you notice any of these signs, it is advisable to inspect the Moog RK621945 assembly for any damage or wear.

          Why should I choose Moog for my Suspension Control Arm and Ball Joint Assembly needs?

          Moog is known for its commitment to quality and performance. By choosing the Moog RK621945, you are ensuring a factory-correct replacement that restores safety and performance. Order Moog RK621945 today for a reliable solution.

          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
              166154
            • Weight
              10 lbs
            • Dimensions (L x W x H)
              4.375 x 13.5 x 14 in
            • Barcode
              80066047744
            • Manufacturer Part #
              RK621945
          • Brand
            Moog
          • Manufacturer
            Moog
          • MPN
            RK621945
          • Part Type
            Suspension Control Arm and Ball Joint Assembly
          • Position
            Front Lower Forward
          • OE Part Numbers
            31126768989, 31126768984, 3112678989, 31126768983
          • Cross Reference Numbers
            TC3231, CB14185PR, 102-7802, 1027802, 40821, 524-480, 524480, CMS101105, CA14253PR, 102-7803, 1027803, TC3230, 40822, CB14185, CA14254PR, 524-479, 524479, 45D10243, 524-526, 524526, CA5206, 102-7797, 1027797
          • Features
            Adjustable : No
            Ball Joint Mounting Type : Press In
            Ball Joint Stud Type : Threaded
            Bushing Material : Rubber
            Bushings Included : Yes
            Control Arm Color : Black
            Control Arm Material : Forged Steel
            Control Arm Maximum Length : 10.640
            Grease Fitting Included : No
            Mounting Hardware Included : Yes
            Pre-Greased : Yes
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2006BMW325xiBase (3.0 L6 GAS)
          2006BMW330xiBase (3.0 L6 GAS)
          2012BMWX1xDrive28i (2.0 L4 GAS)
          2012BMW328i xDriveBase (3.0 L6 GAS)
          2012BMW335i xDriveBase (3.0 L6 GAS)
          2013BMWX1sDrive28i (2.0 L4 GAS)
          2013BMWX1xDrive28i (2.0 L4 GAS)
          2013BMWX1xDrive35i (3.0 L6 GAS)
          2013BMW328i xDriveBase (3.0 L6 GAS)
          2013BMW335i xDriveBase (3.0 L6 GAS)
          2014BMWX1sDrive28i (2.0 L4 GAS)
          2014BMWX1xDrive28i (2.0 L4 GAS)
          2014BMWX1xDrive35i (3.0 L6 GAS)
          2015BMWX1sDrive28i (2.0 L4 GAS)
          2015BMWX1xDrive28i (2.0 L4 GAS)
          2015BMWX1xDrive35i (3.0 L6 GAS)
          2007BMW328xiBase (3.0 L6 GAS)
          2007BMW335xiBase (3.0 L6 GAS)
          2008BMW328xiBase (3.0 L6 GAS)
          2008BMW335xiBase (3.0 L6 GAS)
          2009BMW328i xDriveBase (3.0 L6 GAS)
          2009BMW335i xDriveBase (3.0 L6 GAS)
          2010BMW328i xDriveBase (3.0 L6 GAS)
          2010BMW335i xDriveBase (3.0 L6 GAS)
          2011BMW328i xDriveBase (3.0 L6 GAS)
          2011BMW335i xDriveBase (3.0 L6 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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