Replacing the cabin filter on the Audi A4 B8

Every modern car has an element called a cabin filter, and the Audi A4 B8 is no exception. It is easy to guess that the filter is used to clean the air in the cabin during operation. Thus, it can be used to prevent dust, dirt or other small particles from getting inside.

Stages of replacing the filter element Audi A4 B8

Compared to most other cars, changing the cabin air filter on an Audi A4 B8 is relatively easy. Special preparation for this operation is not required. All you need is the new filter element itself.

There is no point in talking about the benefits of the salon, especially when it comes to coal. Therefore, it is not surprising that self-installation of filters in cars has become commonplace. This is a fairly simple routine maintenance procedure, there is nothing complicated about it.

According to the regulations, the cabin filter is scheduled to be replaced every 15 km, that is, every scheduled maintenance. However, depending on the operating conditions of the car, the replacement period can be reduced to 000-8 thousand kilometers. The more often you change the filter in the cabin, the cleaner the air will be and the better the air conditioner or heater will work.

The fourth generation was produced from 2007 to 2011, as well as restyled versions from 2011 to 2015.

Where is

The cabin filter of the Audi A4 B8 is located in the passenger footwell, under the glove box. Getting to it is not difficult if you follow the instructions described below.

The filter element makes the ride comfortable, so there is no need to neglect its replacement. Much less dust will accumulate in the cabin. If you use carbon filtration, the air quality in the car interior will even be noticeably better.

Removing and installing a new filter element

Replacing the cabin filter of the Audi A4 B8 is a fairly simple and routine periodic maintenance procedure. There is nothing complicated about this, so it is very simple to make a replacement with your own hands.

For greater comfort, we moved the front passenger seat as far back as possible. After that, we begin to perform the operation itself point by point:

1. We move the front passenger seat all the way back, for other more convenient actions. After all, the cabin filter is installed under the glove compartment and with the seat moved back, access to it will be easier (Fig. 1).
2. We bend under the glove compartment and unscrew the three plastic screws that secure the soft pad. Carefully detach the lining itself, especially near the air ducts, try not to tear it (Fig. 2).
3. After removing the soft pad, access to the installation site is open, now you need to remove the plastic pad. To remove it, there is a ledge, press it and slide the plug to the right (Fig. 3).
4. If the cabin filter is changed often enough, then after removing the plastic cover, it will lower and all that remains is to remove it. But if it's heavily clogged, accumulated debris can hold it back. In this case, it is necessary to pry with something, for example, with a screwdriver (Fig. 4).
5. Now it remains to install a new filter element, but you can first vacuum the seat with a thin nozzle of a vacuum cleaner (Fig. 5).
6. After replacement, it remains only to install the cover in place and make sure that it is up to the stop. We also install the foam pad in its place and fix it with plastic lambs.

When installing, pay attention to the filter element itself. The top chamfered corner, which should be on the right side, indicates the correct installation position.

When removing the filter, as a rule, a large amount of debris accumulates on the mat. It is worth vacuuming from the inside and the body of the stove - the dimensions of the slot for the filter make it quite easy to work with a narrow vacuum cleaner nozzle.

Which side to install

In addition to actually replacing the air filter element in the cabin, it is important to install it on the right side. There is a simple notation for this:

• Only one arrow (no inscription) - indicates the direction of air flow.
• The arrow and the inscription UP indicate the top edge of the filter.
• The arrow and the inscription AIR FLOW indicate the direction of the air flow.
• If the flow is from top to bottom, then the extreme edges of the filter should be like this - ////
• If the flow is from bottom to top, then the extreme edges of the filter should be - ////

In the Audi A4 B8, it is impossible to go wrong on the installation side, because the manufacturer has taken care of it. The right edge of the filter has a beveled appearance, which eliminates the installation error; otherwise it just won't work.

When to change, which interior to install

For scheduled repairs, there are regulations, as well as recommendations from the manufacturer. According to them, the cabin filter of the Audi A4 B8 heating and air conditioning system should be replaced every 15 km or once a year.

Since the operating conditions of the car in most cases will be far from ideal, experts advise to carry out this operation twice as often - in spring and autumn.

Typical symptoms:

1. windows often fog up;
2. the appearance in the cabin of unpleasant odors when the fan is turned on;
3. wear of the stove and air conditioner;

They can make you doubt that the filter element is doing its job, an unscheduled replacement will be required. In principle, it is these symptoms that should be relied upon when choosing the correct replacement interval.

Suitable sizes

When choosing a filter element, owners do not always use products recommended by the car manufacturer. Everyone has their own reasons for this, someone says that the original is excessively expensive. Someone in the region sells only analogues, so you need to know the sizes by which you can later make a choice:

• Height: 35 mm
• Width: 279 mm
• Length (long side): 240 mm
• Length (short side): 189 mm

As a rule, sometimes analogues of the Audi A4 B8 can be a few millimeters larger or smaller than the original, there is nothing to worry about. And if the difference is calculated in centimeters, then, of course, it is worth finding another option.

Choosing an original cabin filter

The manufacturer recommends using only original consumables, which, in general, is not surprising. By themselves, they are not of poor quality and are widely distributed in car dealerships, but their price may seem overpriced to many car owners.

Regardless of the configuration, for all fourth-generation Audi A4s (including the restyled version), the manufacturer recommends installing a cabin filter, dust with article number 8K0819439 (VAG 8K0 819 439) or carbon filter with article number 8K0819439B. (VAG 8K0 819 439 B).

It should be noted that consumables and other spare parts can sometimes be supplied to dealers under different article numbers. Which can sometimes confuse those who want to buy exactly the original product.

When choosing between a dustproof and carbon product, car owners are advised to use a carbon filter element. Such a filter is more expensive, but cleans the air much better.

It is easy to distinguish: the accordion filter paper is impregnated with a charcoal composition, due to which it has a dark gray color. The filter cleans the air stream from dust, fine dirt, germs, bacteria and improves lung protection.

Which analogues to choose

In addition to simple cabin filters, there are also carbon filters that filter the air more efficiently, but are more expensive. The advantage of SF carbon fiber is that it does not allow foreign odors coming from the road (street) to penetrate into the car interior.

But this filter element also has a drawback: air does not pass through it well. The GodWill and Corteco charcoal filters are of good quality and are a good replacement for the original.

However, at some points of sale, the price of the fourth generation Audi A4 original cabin filter can be very high. In this case, it makes sense to buy non-original consumables. In particular, cabin filters are considered quite popular:

Conventional filters for dust collectors

• MANN-FILTER CU2450 – technological consumables from a well-known manufacturer
• BIG Filter GB-9997 - popular brand, good fine cleaning
• Filtern K 1278: a good manufacturer at a reasonable price

Charcoal cabin filters

• MANN-FILTER CUK 2450: thick, high-quality carbon lining
• Mahle LAK386 - activated carbon
• BIG Filter GB-9997 / C - normal quality, affordable price

It makes sense to look at the products of other companies; We also specialize in the production of high quality automotive consumables:

• Corteco
• Filter
• Fct
• Sakura
• Goodwill
• Frame
• J. S. Asakashi
• Champion
• Zeckert
• Masuma
• Nipparts
• Purflow
• Knecht-Male

Sellers may recommend replacing the Audi A4 B8 cabin filter with cheap non-original replacements, especially less thick ones. They are not worth buying, as their filtering characteristics are unlikely to be up to par.

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