This Bosch cabin air filter features HEPA-grade filtration with a foam pre-filter, capturing fine particles and odors. It is designed as a direct OE replacement for many Audi A4, S4, and RS4 models. The high-efficiency particulate media helps reduce allergens and pollutants entering the cabin.
Key Features & Benefits
- HEPA Filtration: Captures 99.97% of airborne particles down to 0.3 microns.
- Foam Pre-Filter: Removes larger debris and extends filter life.
- OEM Reference: Replaces Audi part 4B0 819 439 C / 4B0819439C.
- Durable Construction: Spunbound polyester and synthetic meltblown fibers.
Vehicle Fitment
| Make | Model | Years | Engine |
|---|---|---|---|
| Audi | S4 | 2004–2005 | 4.2V8 |
| Audi | S4 | 2005–2009 | 4.2V8 |
| Audi | A4 Quattro | 2005–2009 | 3.2V6 |
| Audi | A4 | 2005–2009 | 2.0L4 |
| Audi | RS4 | 2007–2008 | 4.2V8 |
| Audi | A4 | 2006–2008 | 3.2V6 |
| Audi | A4 Quattro | 2002–2006 | 3.0V6 |
| Audi | A4 | 2002–2006 | 1.8L4 |
| Audi | A4 Quattro | 2002–2005 | 1.8L4 |
| Audi | A4 | 2002–2005 | 3.0V6 |
Technical Specifications
| Part Number | 4B0819439C |
| Filter Type | HEPA with Foam Pre-Filter |
| Material | Spunbound Polyester, Meltblown Fibers, Foam |
| Brand | Bosch |
Installation Notes
Replace every 12,000 miles or as needed; accessible behind glovebox on most Audi models.
About Bosch
Bosch is a premier automotive component manufacturer, known for OE-quality parts and rigorous testing.
This part also goes by the following cross reference.
Cross Reference Part Number: 4B0819439C
Fits These Vehicles
| Make | Model | Engine | Years |
|---|---|---|---|
| Audi | S4 | 4.2V8 | 2004–2005 |
| Audi | A4 Quattro | 3.0V6 | 2002–2006 |
| Audi | A4 | 1.8L4 | 2002–2006 |
| Audi | A4 Quattro | 1.8L4 | 2002–2005 |
| Audi | A4 | 3.0V6 | 2002–2005 |
| Make | Model | Engine | Years |
|---|---|---|---|
| Audi | S4 | 4.2V8 | 2005–2009 |
| Audi | A4 Quattro | 3.2V6 | 2005–2009 |
| Audi | A4 Quattro | 2.0L4 | 2005–2009 |
| Audi | A4 | 2.0L4 | 2005–2009 |
| Audi | A4 | 3.2V6 | 2006–2008 |
| Make | Model | Engine | Years |
|---|---|---|---|
| Audi | RS4 | 4.2V8 | 2007–2008 |