K&N crankcase vent filters

The K&N crankcase ventilation filter filters the exhaust gases that come from the crankcase. When the engine is running, the pistons push combustion gases into the crankcase. These gases mix with the oil vapours and air that are in the crankcase. It is very harmful to the environment if these vapours were to escape. Therefore, they are routed to the intake via pipes and hoses. The K&N crankcase ventilation filter filters the vapours before they enter the engine system. Without this filter, unfiltered air enters the engine system, which is very harmful to the car engine. The filter will become clogged over time and will need to be replaced. Below you can read what the symptoms of a clogged filter are and how to replace the K&N crankcase ventilation filter.

K&N crankcase ventilation filter clogged

After some time, the K&N crankcase ventilation filter will become clogged. The air is then no longer filtered, causing dirt particles to enter the engine system. This can ultimately cause serious damage to the engine. Driving with a clogged K&N crankcase ventilation filter is not recommended. A clogged filter means that air cannot flow through the filter as quickly. This causes pressure to build up in the crankcase. Eventually, the gaskets and seals will be damaged. You can recognise a clogged K&N crankcase ventilation filter by the following symptoms:

High RPM when the engine is idling
Leakage of engine oil or coolant
Poor engine performance
Poor fuel economy

We recommend inspecting the K&N crankcase ventilation filter annually and replacing it if necessary. Below we explain how you can replace the filter yourself.

Replacing the K&N crankcase ventilation filter

A dirty K&N crankcase ventilation filter must be replaced on time. You will find the filter on the rocker cover or in the breather hose on the crankcase. Keep in mind that the exact way to replace this part differs per car make and model. Below we explain in a few global steps how to replace the K&N crankcase ventilation filter:

1. Open the air filter housing to access the filter.

2. Disconnect the breather hose. Then remove the clip that secures the filter.

3. Place the new filter in the same place as the old one and secure it with the clip.

4. Then close the air filter housing.

5. Finally, test whether the symptoms have been resolved.

Buying a K&N crankcase ventilation filter

Do you have a clogged K&N crankcase ventilation filter and are you looking for a new one? At Winparts you can easily buy the right filters. Enter your registration number on the website and the correct parts will be shown to you. This way you can be sure that the parts fit your vehicle. Are you still looking for other filters for your vehicle? We also have a wide range of oil filters, air filters, coolant filters and cabin air filters.

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K&N crankcase vent filters

The K&N crankcase ventilation filter is located near the crankcase. Engine oil is stored in the crankcase. The oil vapours mix with the air in the crankcase. To prevent these harmful substances from being released into the environment, they first go into the combustion system. The K&N crankcase ventilation filter plays an important role in this. These vapours contain dirt and oil particles. To prevent this from entering the engine system, the car has a K&N crankcase ventilation filter. Therefore, replace this filter on time to prevent engine problems. This will save you a lot of garage costs.

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