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          Rein ACR0001R - A/C Line O-Ring

          MPN: ACR0001R
          The Rein ACR0001R A/C Line O-Ring ensures a tight seal in your Mercedes-Benz air conditioning system, preventing leaks and maintaining efficiency. Easy to install and built to last.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $0.11
          In stock

          Product Overview

          The Rein A/C Line O-Ring part number ACR0001R is an exceptional replacement part designed specifically for Mercedes-Benz vehicles. With its compatibility to the original part number 163 997 05 45, this high-quality A/C line O-ring ensures a perfect fit and optimal performance for your vehicle's air conditioning system. Engineered to OEM standards, this A/C line O-ring is crafted from premium-grade materials that guarantee durability and reliability. It boasts excellent resistance to heat, corrosion, and wear and tear, ensuring that it will last you for many years to come. Choose Rein ACR0001R for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Rein ACR0001R is equivalent to or replaces the following part numbers: 163 997 05 45, 1639970545.

          Vehicle Compatibility

          • Mercedes-Benz ML320 3.2 V6 (1998–2005)
          • Mercedes-Benz ML430 4.3 V8 (1999–2005)
          • Mercedes-Benz ML500 5.0 V8 (2002–2005)
          • Mercedes-Benz ML350 3.7 V6 (2005)
          • Mercedes-Benz ML55 AMG 5.5 V8 (2001)

          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 Rein ACR0001R A/C Line O-Ring do?

          The A/C O-Ring is a critical component in the air conditioning system of your vehicle. It seals the connections between the A/C lines, preventing refrigerant leaks and ensuring optimal performance of the air conditioning system.

          How do I know if my A/C Line O-Ring needs replacement?

          Common signs that the A/C O-Ring may need replacement include: A/C system not blowing cold air, visible refrigerant leaks, or unusual noises coming from the A/C compressor.

          Can I install the Rein ACR0001R myself?

          Yes, you can install the Rein ACR0001R yourself. However, it is important to follow proper procedures to ensure a secure fit and prevent refrigerant loss.

          What are the symptoms of a faulty A/C Line O-Ring?

          Symptoms of a faulty A/C O-Ring include a lack of cold air from the A/C system, refrigerant leaks, and possible compressor noises. Addressing these issues promptly is crucial to maintain your vehicle's comfort.

          Why should I choose Rein for my A/C Line O-Ring needs?

          Rein is known for its quality and reliability in the automotive parts industry. Order Rein ACR0001R today for a factory-correct replacement that restores comfort and performance to your vehicle's air conditioning system.

          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
              661520
            • Weight
              0.01 lbs
            • Barcode
              843266023310
            • Manufacturer Part #
              ACR0001R
          • Brand
            Rein
          • Manufacturer
            Rein
          • MPN
            ACR0001R
          • Part Type
            A/C Line O-Ring
          • OE Part Numbers
            163 997 05 45, 1639970545
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2001Mercedes-BenzML55 AMGBase (5.5 V8 GAS)Notes: 11x1.5mm
          2001Mercedes-BenzML430Base (4.3 V8 GAS)Notes: 11x1.5mm
          2001Mercedes-BenzML320Base (3.2 V6 GAS)Notes: 11x1.5mm
          2005Mercedes-BenzML500Base (5.0 V8 GAS)Notes: 11x1.5mm
          2005Mercedes-BenzML350Base (3.7 V6 GAS)Notes: 11x1.5mm
          2004Mercedes-BenzML500Base (5.0 V8 GAS)Notes: 11x1.5mm
          2003Mercedes-BenzML500Base (5.0 V8 GAS)Notes: 11x1.5mm
          2002Mercedes-BenzML500Base (5.0 V8 GAS)Notes: 11x1.5mm
          2002Mercedes-BenzML320Base (3.2 V6 GAS)Notes: 11x1.5mm
          2000Mercedes-BenzML430Base (4.3 V8 GAS)Notes: 11x1.5mm
          2000Mercedes-BenzML320Base (3.2 V6 GAS)Notes: 11x1.5mm
          1999Mercedes-BenzML430Base (4.3 V8 GAS)Notes: 11x1.5mm
          1999Mercedes-BenzML320Base (3.2 V6 GAS)Notes: 11x1.5mm
          1998Mercedes-BenzML320Base (3.2 V6 GAS)Notes: 11x1.5mm
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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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