Reasons to change your air filter

You should change the cabin air filter of your 1987 BMW 325is for a few reasons:

• Cleaner air quality inside the car: The cabin air filter helps to remove pollutants, dust, and other allergens from the air inside the car, which improves the air quality for the passengers.
• Protecting the engine: A dirty or clogged air filter can restrict the airflow to the engine, which can damage the engine over time.
• Extending the life of the HVAC system: The cabin air filter also helps to keep the heating and air conditioning system running smoothly, which helps increase the efficiency of the system.
• Improved engine performance: A clean air filter allows for a sufficient amount of air to reach the engine, which can improve overall performance and fuel efficiency.
• Improving the air quality outside the car: A clean air filter improves the air quality outside the car by filtering out airborne contaminants.

By changing the air filter on a regular basis, you can ensure that your BMW 325is engine and HVAC system are running efficiently, and that the air inside and outside the car is clean and healthy.

The correct cabin air filter on a 1987 BMW 325is

For any 1987 BMW 325is, you can use BOSCH P3681WS cabin air filters. These will be an exact fit and will match the required specifications of your 325is. We always try to recommend the highest quality air filters for your money, and these air filters are either a factory recommendation or an equivalent replacement available in today’s market at an affordable price.

How often should I change my cabin air filter?

In general, it is recommended to replace the cabin air filter once per year, or every 12,500 miles, whichever comes first. If you drive in a highly polluted area, or in an area with high levels of dust, pollen, or other allergens, consider changing the filter more frequently. Similarly, if you frequently drive on dirt or gravel roads, or if you use your 1987 BMW 325is for off-roading, change your air filter more often.

It’s also important to pay attention to the signs that the filter needs to be changed, including:

• Increased dust and debris in your car
• Odd smells coming from the vents
• Reduced airflow from the vents

Changing the cabin air filter on a 1987 BMW 325is

This is a process you can do on your own with some ordinary tools. Of course, consult your owner’s manual, as well as a factory service manual. The video shown below does a good job of demonstrating the process.

Tips for changing the cabin air filter on a 1987 BMW 325is

Ensure you reference the video above before you attempt to replace the air filter on your 1987 BMW 325is, as well as review your factory service manual. Additionally, we have some tips below here to help you as you perform this repair.

• Clean the area around the filter: Before installing the new filter, use a vacuum cleaner or compressed air to clean the area around the filter. This will help prevent debris from getting inside the new filter.
• Orient the filter correctly: Make sure the new filter is installed securely, with the arrows on the filter pointing in the direction of the airflow. Improper installation may result in reduced filter performance or even damage to your car’s ventilation system.
• Follow manufacturer’s recommendations: Follow any specific instructions provided by the manufacturer, such as replacing any clips or fasteners, to ensure the proper fit of the new filter.

Helpful Tools

You should be able to accomplish a cabin air filter change with some normal tools you likely already have. However, there are a few tools that are specific to this job that you may not have, and we also want to recommend some commonplace tools that you should absolutely have in your toolbox if you do not already.

• A can of Compressed Air – use this to clean the area around the filter. This will help ensure that the new filter operates at maximum efficiency.
• A Mask – If you have allergies or sensitivities to dust or other allergens, it is recommended to wear a mask to protect yourself when removing and replacing the cabin air filter.
• Screwdriver – In some cases, you will need a screwdriver to remove the cover that houses the cabin air filter.
• A Vacuum Cleaner / Shop Vac – You can use a handheld vacuum cleaner or shop vac instead of compressed air, but it won’t displace the the debris quite as effectively.