AUDI 420-906-321 Filter RS7-S6-S7-R8

( Manufacturer Part Number: 420-906-321 ), ( Model: RS7 S6 S7 R8 ), ( Part Type: Filter ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Year: 2010 2011 2012 2013 2014 2015 2016 2017 2018 ), ( Parts Included: Only Part Reference 19 On The Diagram Is Included )

Review AUDI Genuine Filter fits 2010–2018

The **Audi 420-906-321 cabin air filter** is a high-quality, precision-engineered filtration component designed exclusively for Audi vehicles equipped with the **420-906-321** part number, ensuring optimal air quality and performance for both the driver and passengers. This filter is crafted from a durable, pleated synthetic media that effectively captures dust, pollen, mold spores, vehicle exhaust fumes, and other airborne contaminants, preventing them from circulating through the vehicle s climate control system. Its compact yet efficient design maximizes surface area, allowing it to trap microscopic particles with exceptional effectiveness while maintaining a steady airflow, which is critical for maintaining cabin comfort and HVAC system efficiency.

Built to Audi s stringent quality standards, this filter is engineered to fit seamlessly into the vehicle s cabin air intake system, ensuring a snug and leak-proof installation that minimizes bypass and maximizes filtration performance. The material used is both robust and long-lasting, resistant to compression and degradation over time, which helps preserve its filtering capabilities even after extended use. Unlike generic or aftermarket alternatives, the **420-906-321** filter is specifically calibrated to meet Audi s engineering specifications, guaranteeing compatibility with the vehicle s climate control system without compromising airflow or filtration efficiency.

Beyond its functional benefits, this filter also contributes to the longevity of the vehicle s HVAC components by reducing the buildup of debris in the system, which can otherwise lead to clogged vents, reduced airflow, or even system malfunctions. Regular replacement of this filter typically recommended every 15,000 to 30,000 miles or as part of routine maintenance helps maintain a fresh, allergen-free environment inside the cabin, reducing odors and improving overall driving comfort. Whether for a daily commuter or a long-distance traveler, the **Audi 420-906-321 cabin air filter** is an essential component for preserving air purity and ensuring a cleaner, healthier driving experience.

### Pros and Cons of buying a Audi 420-906-321 Filter

The **Audi 420-906-321** is a cabin air filter, specifically designed for certain Audi models (such as the A4, A6, Q5, and others from the 2008 2015 model years). Below is a detailed breakdown of its advantages and disadvantages.

---

### **Pros of buying a Audi 420-906-321 Filter**

1. **Improved Air Quality**

The cabin air filter traps dust, pollen, mold spores, and other airborne contaminants, ensuring cleaner air inside the vehicle. This is particularly beneficial for allergy sufferers or those with respiratory sensitivities.

2. **Better Engine Performance**

In some Audi models, the cabin air filter also serves as an intake filter for the engine s air conditioning system. A clean filter allows for optimal airflow, reducing strain on the A/C compressor and improving cooling efficiency.

3. **Extended Lifespan of HVAC System**

A clogged filter forces the blower motor and A/C compressor to work harder, which can lead to premature wear. Replacing it regularly prevents excessive strain and potential system failures.

4. **Reduced Odors Inside the Cabin**

The filter helps prevent musty or unpleasant smells from entering the vehicle, keeping the interior fresher for longer.

5. **OEM Quality (If Purchased from Audi or Authorized Dealers)**

If you buy the genuine Audi part, it is designed to meet the manufacturer s specifications, ensuring a proper fit and performance. However, this comes at a higher cost compared to aftermarket alternatives.

6. **Easy Installation**

The filter is typically located behind the glove compartment or under the dashboard, making it a straightforward DIY replacement for most people.

7. **Compatibility with Modern Audi Models**

This filter is designed for newer Audi models, which often have more advanced cabin filtration systems compared to older vehicles.

---

### **Cons of buying a Audi 420-906-321 Filter**

1. **High Cost (Genuine Part)**

The original Audi cabin air filter is more expensive than aftermarket alternatives. For example, a genuine Audi filter can cost **$50 $100**, while a comparable aftermarket filter may range from **$15 $30**.

2. **Potential for Counterfeit Parts**

If purchasing online, there is a risk of receiving a fake or low-quality filter that does not meet Audi s standards. This could lead to poor filtration, reduced airflow, or even damage to the HVAC system.

3. **Short Lifespan (Depending on Driving Conditions)**

In areas with heavy pollution, dust, or frequent highway driving, the filter may clog faster than expected, requiring more frequent replacements (typically every **15,000 30,000 miles**).

4. **Aftermarket Quality Variability**

While many aftermarket filters are high-quality, some may use cheaper materials that degrade quickly or fail to effectively trap fine particles. Researching brands (e.g., Mann, Fram, K&N) is recommended.

5. **Potential Misalignment or Improper Fit**

If the filter is not installed correctly, it may not seal properly, leading to airflow leaks or reduced efficiency. This is more likely with non-OEM parts if the dimensions do not match precisely.

6. **Environmental and Cost Concerns with Disposal**

Disposing of old cabin air filters improperly can be an issue, though most filters are recyclable. Additionally, frequent replacements add up in cost over time.

---

### **Conclusion**

The **Audi 420-906-321 cabin air filter** is a crucial maintenance item that significantly improves cabin air quality, engine/A/C performance, and overall driving comfort. While the **genuine Audi part offers reliability and proper fit**, it comes at a higher price. **Aftermarket options provide cost savings** but require careful selection to ensure quality.

For most drivers, **replacing the filter every 15,000 30,000 miles** (or more frequently in dusty conditions) is a wise investment in vehicle longevity and passenger health. If budget is a concern, **high-quality aftermarket filters from reputable brands** (such as Mann, Fram, or K&N) offer a good balance of performance and affordability.

---

### **Recommendation**

- **If you prioritize reliability and warranty coverage**, purchase the **genuine Audi 420-906-321 filter** from an authorized dealer or Audi s official website.

- **If you want to save money without sacrificing quality**, choose a **high-end aftermarket filter** (e.g., Mann C 28 002 or Fram CA9602) from a trusted retailer like Amazon, RockAuto, or an auto parts store.

- **For the best value**, consider **carbon-filtered cabin air filters** (e.g., Audi 420-906-321 with activated carbon) if you live in a polluted area or want to reduce odors further.

- **Always check compatibility** with your exact Audi model and year before purchasing to avoid mismatches.

Regular filter replacement is a small but impactful maintenance task that pays off in better air quality, improved HVAC efficiency, and a longer-lasting vehicle.

Details:

Injection, 5.2L. Electrical parts are not returnable. Injection, 4.2L. Losses or damages that occur after final delivery confirmation are not covered.

Product Genuine Audi Filter 420-906-321. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Special Order Items are not returnable under any circumstance. Parts must be resalable and in the original packaging.

part #: 420906321 prices

• $29.99-$123.74

specifications emissyste:

• for makes: Audi
• for years: 2010-2018
• mpn: 420-906-321
• model: Rs7 S6 S7 R8
• part type: Filter
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• year: 2010 2011 2012 2013 2014 2015 2016 2017 2018
• parts included: Only Part Reference 19 On The Diagram Is Included

offer emissyste:

• sold: 0
• started: March 20, 2026
• quantity: 1
• availability: In Stock
• options: Ship-to-home

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

seller emissyste:

• # reviews: 6309
• rating: 99.4%
• city: Henderson, Nevada

payments emissyste:

• credit card: Mastercard
• other
• wallet: Google-pay

returns emissyste:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

shipping emissyste:

• type: Fixed
• transit: 5-12 Days
• service: Standard
• class: Standard
• cost: $8.99

Audi 420-906-321 Is Similar To:

• 000979950 Genuine Volkswagen Audi Vw Oem Cloth Webbed Adhesive Tape New (25.5% similar) This original VW audi oem, cloth webbed adhesive tapes are up for sale set of two. Combined shipping available. Than for looking. Part genuine VW audi...(March 3rd, 2019)
• 03l130851ax Genuine Volkswagen Audi Vw Remanufactured High Pressure Fuel Pump (27.8% similar) If you would like to request a quote have this product shipped outside of the contiguous us, please. When replacing the pump, make sure to also replace cam follower as this is most likely worn or destroyed well. Please with any questions regarding product availability. Please for any fitment ...(December 6th, 2018)
• 06a-133-817-j Audi Genuine Oem Connector Pipe (39.5% similar) ...(August 18th, 2018)
• 06a-906-262-as Audi 06a906262as Genuine Oem (45.9% similar) ...(July 6th, 2017)
• 06e-145-215-a Audi 06e145215a Genuine Oem (52.8% similar) ...(October 20th, 2017)
• 06e-906-265-aj Audi 06e906265aj Genuine Oem (45.9% similar) ...(June 10th, 2017)
• 06f109257c Genuine Volkswagen Audi Vw Valve (37.8% similar) This part has an extremely high failure rate, so if your car is throwing you a code for the N205 valve, might want to replace maintain engine health. If you would like to request a quote have this product shipped outside of the contiguous us, please. Please with any questions regarding product ...(September 25th, 2018)
• 06h-906-517-ab Audi Genuine Valve (56.3% similar) Parts must be resalable and in the original packaging. Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer. Electrical parts are not returnable...(September 25th, 2018)
• 06j145713kx Volkswagen Audi Volkswagen-audi Genuine (34.1% similar) It is our pleasure to serve you...(June 13th, 2017)
• 077911023jxkt Genuine Volkswagen Audi Vw Remanufactured Starter With Core Charge (28.8% similar) If you would like to request a quote have this product shipped outside of the contiguous us, please. Please with any questions regarding product availability. When engaged, the motor spins crankshaft to pump enough air into cylinders support combustion and start engine. Please for any fitment ...(December 10th, 2018)
• 07k103383l Genuine Volkswagen Audi Vw Cylinder Head Gasket (31.5% similar) Genuine VW audi - cylinder head gasket 07K103383L mfg: failure is common in higher mileage vehicles or engines that have overheated. Please for any fitment questions. The signs of a failed head gasket include milky oil, loss performance, and sweet smelling white smoke from exhaust. It is essential ...(December 11th, 2018)