What Filtrete air filters do
Filtrete air filters are pleated filters that trap dust, pollen, pet hair, and other particles before they enter your engine. They fit into the engine compartment of your vehicle and work by forcing incoming air through a dense material that catches contaminants. Over time, the filter fills with debris and restricts airflow, which is why you need to replace it periodically.
Filtrete is a brand made by 3M. Their filters come in different sizes and MERV ratings — a measure of how fine the particles they catch are. A higher MERV rating means the filter traps smaller particles but also restricts airflow more, so you need to replace it more often. For most vehicles, a standard Filtrete filter works well without creating excessive strain on the engine.
The filter sits in a plastic or metal housing under the hood, usually on top of the engine or to the side. Air gets pulled through it and into the engine. When the filter clogs, the engine has to work harder to pull air through, which can reduce fuel economy and performance.
Key Takeaways
- Filtrete filters trap particles before air enters the engine, and you replace them when they become clogged with dust and debris.
- Most vehicles need a new filter every 12,000 to 15,000 miles, though this varies based on driving conditions and the filter's MERV rating.
- You can check if your filter needs replacement by opening the engine compartment and looking at the filter housing — a visibly dirty filter should be swapped out.
- Replacement takes 5 to 10 minutes and requires no tools on most vehicles; you straightforward unclip or unbolt the housing, slide out the old filter, and insert a new one.
How to check if your Filtrete filter needs replacement
The easiest way to know when to replace your filter is to look at it. Open your hood and locate the air filter housing — it is usually a black plastic box on top of the engine or mounted to the side. The housing has clips or bolts holding the lid on.
Unclip or unbolt the lid and look at the filter inside. A clean filter is white or light gray. If the filter is dark gray, brown, or visibly caked with dust and debris, it is time to replace it. You do not need to wait for a specific mileage interval if the filter is already dirty.
If you drive in dusty conditions — unpaved roads, construction zones, or very dry climates — your filter will clog faster than the standard 12,000 to 15,000 mile interval. Check it every 5,000 miles if you drive in these conditions. If you drive mostly on clean highways, you can go longer between checks.
Choosing the right Filtrete filter for your vehicle
Filtrete makes filters for most common vehicles, but you need to match the size and type to your car. The easiest way is to look at your current filter — the part number is printed on the frame. You can then search for that part number on a retailer's website or call an auto parts store with your vehicle's year, make, and model.
Filtrete offers several product lines. Their basic filters work for most drivers. Their electrostatic filters use a slight electrical charge to attract particles and can last longer before clogging. Their high-performance filters have a higher MERV rating and trap more particles but need more frequent replacement. For typical driving, the standard Filtrete filter is sufficient and costs less than specialty versions.
Do not guess at the size. Installing the wrong filter can leave gaps around the edges, allowing unfiltered air into the engine. This defeats the purpose of the filter and can damage engine components over time.
How to replace a Filtrete air filter yourself
Most air filter replacements take 5 to 10 minutes and require no special tools. Start with the engine off and cool. Open the hood and locate the air filter housing.
If the housing has clips, press or pull them to release the lid. If it has bolts, use a wrench or socket to remove them — usually there are two or four. Lift the lid off and set it aside. Slide the old filter out of the housing. It may be tight; gently wiggle it as you pull.
Before inserting the new filter, wipe out the inside of the housing with a dry cloth to remove loose dust. This keeps debris from being sucked into the engine. Slide the new filter into place, making sure it sits flat and the edges are flush with the housing walls. Replace the lid and find the clips or bolts. Close the hood.
That is all there is to it. You do not need to reset anything or take the vehicle to a shop. The new filter is ready to use when ready.
When to replace versus when to clean
Filtrete makes both disposable and reusable filters. Most of their automotive air filters are disposable — once they clog, you throw them away and install a new one. Trying to clean a disposable filter by tapping it, vacuuming it, or blowing compressed air through it can damage the pleats and reduce its effectiveness. Replacement is cheaper and safer.
Some specialty Filtrete filters are marketed as washable or reusable, but these are less common for engine air filters. Check your filter's packaging or the product description to see if it is designed to be cleaned. If it does not explicitly say it is reusable, treat it as disposable.
Cost and where to buy
A Filtrete engine air filter typically costs between $15 and $35, depending on the vehicle and filter type. Basic filters are on the lower end; electrostatic or high-performance versions cost more. You can buy them at auto parts stores, online retailers, big-box stores, or directly from 3M's website.
Buying online and doing the replacement yourself saves money compared to having a shop do it. Most shops charge $30 to $75 in labor for a filter replacement, so the total cost at a shop is often $50 to $100. If you buy the filter yourself and spend 10 minutes installing it, you pay only the filter cost.
Frequently Asked Questions
Can I use a Filtrete filter in any vehicle?
No. Filtrete makes filters in different sizes for different vehicles. You must match the filter size and type to your vehicle's year, make, and model. Using the wrong size leaves gaps and allows unfiltered air into the engine. Always check your current filter's part number or look up your vehicle's specifications before buying.
How often should I replace my Filtrete filter?
Most vehicles need a new filter every 12,000 to 15,000 miles. If you drive in dusty or dirty conditions, replace it every 5,000 to 8,000 miles. The best approach is to check the filter visually every few months — if it looks dark or clogged, replace it regardless of mileage.
What happens if I drive with a clogged air filter?
A clogged filter restricts airflow to the engine, which reduces fuel economy and can make the engine feel sluggish. Over time, it may also allow some unfiltered particles to reach the engine, potentially causing wear. Replacing a clogged filter restores normal performance and protects the engine.
Do I need to buy the most expensive Filtrete filter?
No. For most drivers, a standard Filtrete filter works well and costs less than specialty versions. High-performance or electrostatic filters may last slightly longer or trap more particles, but they are not necessary for typical driving. Buy the standard filter unless you have specific needs like severe allergies or very dusty driving conditions.
Can I install a Filtrete filter if I have never done it before?
Yes. The process is straightforward and requires no special skills or tools on most vehicles. Open the housing, remove the old filter, wipe out the housing, and slide in the new one. If you get stuck, your vehicle's owner manual has a diagram showing the filter location and how to access it.