Audi S4 Cabin air filter, 3 stage Carbon air filter
Providing healthy clean air for your vehicle’s occupants
Australian made. Part number CAFA227S4
A new approach to healthy clean air for vehicle occupants

We have taken a new approach to Cabin Air filtration. Our Proudly Australian-made & Designed 3 Stage carbon cabin air filters have redefined what an Audi S4  cabin air filter can achieve. Our three layers of Carbon material over 20mm thick versus old-style pleated filters with only a 2 mm thin fabric layer give, a vast filtration improvement. The carbon filter material is supported by our custom-made acrylic base. All layers combined, giving you healthy clean air inside your vehicle.

How Our Filters Work

As the polluted air is forced through 1000s of tiny pores constantly swirling and changing direction, it’s depositing microscopic particles along the way, Though over 20 mm thickness of 3 progressively finer activated carbon filtering layers. Particles stick to the carbon’s rough surface, and the carbon’s microscopic pores absorb noxious odours, gases, and chemicals. The cleaned fresh air then exits the Audi S4 cabin filter into your Vehicle’s interior. Unlike Standard filters, air only passes through a single 2mm thin layer.

Carbon Pre-filter Stage

Our Audi S4 Cabin Air Filter 15 mm thick pre-filter Layer of activated carbon filter sponge. This Audi S4 Pre-filter Traps allergy-causing particles such as pollen, dust, mites, fungus spores, pet hair, organic and inorganic material are the first layer of noxious odour and pollution absorption.

2nd and 3rd Carbon Stages

Second and third layers of progressively finer carbon filter material over 4 mm thick. It traps and absorbs hazardous microscopic particles such as Bacteria, Airborne heavy metals, harmful gases, diesel exhaust particulates, chemicals, and ozone as much as possible. All Layers are supported by our low-allergy custom-made acrylic base designed for your air conditioner. As a result, we provide the best possible protection from pollution entering your Audi S4 Air-conditioning system.

Why Our Filters Are Better
  • Standard cabin air filters the contaminated air only passes through a single 2 mm thin material layer in an old-style “W shaped pleated” Audi S4 pollen filter.
  • The contaminated air travels through the entire 20 mm of 3 carbon stages in our Cabin air filter, vastly improving chemical absorption and filtration.
  • We also designed the Audi S4 cabin filter to better seal around the filter’s edges and filter housing to reduce contamination bypassing the filter.
Replace Yearly

Your new premium Audi S4 pollen filter is designed to be replaced(more often in harsh environments) yearly, as the micropores of the activated carbon Trap & absorb the dangerous contaminates and become less effective over time. Additionally, replacing the Audi S4 air-conditioner filter annually keeps the air-conditioner

Fitting informationAudi S4 Cabin Air Filter Location …… Below  Glovebox

Audi S4 Cabin Air Filter fitting Video ….. Youtube fitting video click here (not our fitting video but will point you to location)

This filter is curved and flexible to allow it to fit in the curved filter housing in your Audi

If you have any questions regarding this product please feel free to email info@cabinairfilters.com.au

Interchangeable with(may also interchange with other numbers)
RCA379MS
WACF0247
MANN-FILTER CU31003
VAG 4M0 819 439
VAG 4M0 819 439 A
VAG 8W0 819 439
Dimensions310 × 223 × 25 mm