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Mann-Filter CU 1721-2 - Cabin Air Filter
MPN: CU 1721-2
The Mann-Filter CU 1721-2 Cabin Air Filter enhances your BMW's interior air quality by trapping dust and pollen. Designed for optimal airflow and comfort.
Vehicle Specific
Check if this part fits your vehicle.
Product Overview
The Mann-Filter Cabin Air Filter CU 1721-2 is engineered to meet OEM standards, providing a reliable solution for improving the air quality inside your BMW. This premium-grade cabin air filter effectively traps dust, pollen, and other airborne contaminants, ensuring a clean and comfortable driving environment. Perfectly designed for vehicles equipped with automatic air conditioning, this filter helps maintain optimal airflow and system efficiency. Choose Mann-Filter CU 1721-2 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Mann-Filter CU 1721-2 is equivalent to or replaces the following part numbers: 64 11 9 237 159
Vehicle Compatibility
- BMW X1 2.0 L4 (2016–2018)
- BMW X3 2.0 L4 (2012–2018)
- BMW X3 3.0 L6 (2012–2018)
- BMW X4 2.0 L4 (2016–2018)
- BMW X4 3.0 L6 (2016–2018)
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 Mann-Filter CU 1721-2 Cabin Air Filter do?
The Mann-Filter Cabin Air Filter CU 1721-2 filters the air entering the cabin of your BMW, removing dust, pollen, and other pollutants. This helps maintain a clean and healthy atmosphere inside the vehicle, enhancing both comfort and driver focus.
How do I know if my Cabin Air Filter needs replacement?
Common symptoms that indicate the need for replacement include reduced airflow from the HVAC system, unpleasant odors inside the vehicle, and increased dust accumulation on interior surfaces. If you notice any of these signs, it may be time to change your cabin air filter.
Can I install the Mann-Filter CU 1721-2 myself?
This cabin air filter can be installed as a DIY project. However, it is important to follow the manufacturer’s instructions closely and ensure that you have the necessary tools for a proper installation.
What are the symptoms of a faulty Cabin Air Filter?
Symptoms of a failing cabin air filter may include a noticeable decrease in airflow from the HVAC system, unpleasant odors circulating in the cabin, and increased dust on vehicle surfaces. Regularly inspecting and replacing the filter can help avoid these issues.
Why should I choose Mann-Filter for my Cabin Air Filter needs?
Mann-Filter is known for its quality and reliability in the automotive industry. Order Mann-Filter CU 1721-2 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.
- BrandMann-Filter
- ManufacturerMann-Filter
- MPNCU 1721-2
- Part TypeCabin Air Filter
- OE Part Numbers64119237159
- Cross Reference NumbersCU17212, LA873S, CU 1721-2, C11809, WP10607, 230607
- FeaturesClass : C
Duty Type : LD
Height : 1.2
Length : 6.45
Media Material : Particulate
Style : Cabin Air Panel
Width : 3.51
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2013 | BMW | X3 | xDrive35i (3.0 L6 GAS) | |
| 2018 | BMW | X4 | M40i (3.0 L6 GAS) | |
| 2018 | BMW | X4 | xDrive28i (2.0 L4 GAS) | |
| 2016 | BMW | X3 | xDrive35i (3.0 L6 GAS) | Aspiration: Turbocharged, Notes: |
| 2016 | BMW | X3 | sDrive28i (2.0 L4 GAS) | Notes: |
| 2016 | BMW | X3 | xDrive28d (2.0 L4 DIESEL) | Notes: |
| 2016 | BMW | X3 | xDrive28i (2.0 L4 GAS) | Notes: |
| 2016 | BMW | X4 | M40i (3.0 L6 GAS) | Aspiration: Turbocharged, Notes: Recirculation (Cabin) |
| 2016 | BMW | X4 | xDrive35i (3.0 L6 GAS) | Aspiration: Turbocharged, Notes: Recirculation (Cabin) |
| 2016 | BMW | X4 | xDrive28i (2.0 L4 GAS) | Notes: Recirculation (Cabin) |
| 2017 | BMW | X3 | xDrive35i (3.0 L6 GAS) | Notes: with Automatic Climate Control |
| 2017 | BMW | X3 | sDrive28i (2.0 L4 GAS) | Notes: with Automatic Climate Control |
| 2017 | BMW | X3 | xDrive28d (2.0 L4 DIESEL) | Notes: with Automatic Climate Control |
| 2017 | BMW | X3 | xDrive28i (2.0 L4 GAS) | Notes: with Automatic Climate Control |
| 2017 | BMW | X4 | M40i (3.0 L6 GAS) | Notes: Recirculation (Cabin) |
| 2017 | BMW | X4 | xDrive28i (2.0 L4 GAS) | |
| 2014 | BMW | X3 | xDrive35i (3.0 L6 GAS) | |
| 2014 | BMW | X3 | xDrive28i (2.0 L4 GAS) | |
| 2015 | BMW | X3 | xDrive35i (3.0 L6 GAS) | |
| 2015 | BMW | X3 | sDrive28i (2.0 L4 GAS) | |
| 2015 | BMW | X3 | xDrive28d (2.0 L4 DIESEL) | |
| 2015 | BMW | X3 | xDrive28i (2.0 L4 GAS) |
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.
