Audi A4 Cabin air filter triple-layer carbon cabin filter, Australian Made. Part number CAFA225A4.
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 carbons rough surface, the carbons microscopic pores absorb noxious odours, gases, and chemicals. The cleaned fresh air then exits the Audi A4 cabin filter into your Vehicle’s interior.With standard filters, the air only passes through 2mm thin material.

Pre-filter Layer

Our Audi A4 Cabin Air Filter 15 mm thick pre-filter Layer of activated carbon filter sponge. This 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 Layers

Second and third layers of progressively finer carbon filter material over 4 mm thick. 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 A4 Air-conditioning system.

Why Our Filters Are Better
  • Standard cabin air filters the contaminated air only passes through 2 mm thin material in old-style “W shaped pleated” Audi A4 cabin air pollen filter.
  • The contaminated air travels through the entire 20 mm of 3 carbon layers in our Cabin air filter, vastly improving chemical absorption and filtration.
  • We also designed the Audi A4 cabin filter to better seal around the filter’s edges and filter housing to reduce contaminates bypassing the filter.
Replace Yearly

Your new premium Audi A4 Cabin Air 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 A4 air-conditioner filter annually keeps the air-conditioner working at peak performance.

About Our Filters
  • Our Audi A4 cabin air filter is Made and Designed in Australia
  • Using non-Toxic Adhesives
  • You may find our 25 mm thick filter different in thickness to your old cabin filter. However, it’s a superior, more efficient design that seals around the edge and will be a snug fit in the housing once installed.
  • Low allergy Acrylic filter support frames are precision cut to suit your Audi A4 Air-Conditioner.
  • We source Activated Carbon from Coconut Shells.
  • Australian made recyclable packaging.
Fitting information

Audi A4 Cabin Air Filter Location …… This cabin air filter is an easy fit. Fits in front of the windscreen in the engine bay, on the passenger side, under the plastic cover.

If you have any questions regarding this product, email info@cabinairfilters.com.au
This cabin air filter is an easy fit. Fits in front of the windscreen in the engine bay, on the passenger side under the plastic cover.
Interchangeable with
Ryco RCA 192P
WESFIL WACF0138
VAG 8K0 819 439
VAG 8K0 819 439 B
HENGST FILTER E2948LC
MAHLE/KNECHT LAK 386
MANN-FILTER CU2450
MANN-FILTER CUK2450
Dimensions 280 × 240 mm