Keep your motor’s lungs fed with clean, energy-rich oxygen from the “the world’s best air filter”—K&N Air Filters. Constructed from pleated sheets of oiled cotton gauze, these air filters strip away grime without blocking airflow. Fully reusable. Million Mile Limited Warranty.
Say goodbye to the days of re-oiling your reusable performance filter—innovative aFe Pro-Dry S Air Filters boast a 100% oil-free cotton gauze construction for wicked airflow. Easy to clean and reuse. The Pro-Dry S Air Filter is backed by a Lifetime Warranty.
Steer clear of oil-soaked upgrades and make the switch to AEM DryFlow Air Filters. Boasting an oil-free polyester synthetic material, these performance air filters ensure ample airflow, enhanced protection and easy maintenance. Custom sized. Lifetime Limited Warranty.
Get maximum filtration with the Airaid SynthaMax Air Filter. Featuring 5 layers of non-oiled, 100% synthetic fiber, this reusable air filter directly replaces your factory paper filter with no modifications. Washable in household detergent and reusable for life. Lifetime Warranty.
Drop in optimal engine filtration and performance with the Airaid SynthaFlow Air Filter. Replacing flimsy factory paper filters, this high-performance filter combines multiple oiled cotton gauze and synthetic fiber layers to deliver ultimate airflow and protection. Lifetime Warranty.
When you equip your engine bay with an aFe Air Filter, you’ll never need another performance air filter in your ride’s life. aFe expertly crafts your automotive air filter from high-quality cotton gauze to trap grime without blocking airflow. Cleanable and reusable. Lifetime Warranty.
Not sure which 2004 Mazda 3 Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"This air filter has increased throttle response and horse power. I recommend this product to anyone." —Marcos S from Severn, MD bought a K&N Air Filters for a 2004 Mazda 3.
"The K&N panel filter noticeably improved the low to mid range throttle response on my 2.3L Mazda 3S. I'm not sure if there was any high rpm performance change. It was well worth the premium over a conventional paper filter." —Robert D from Greenwood, IN bought a K&N Air Filters for a 2004 Mazda 3.
"Car clearly breathes better! Return to idle is much smoother and so is revving." —Ronald S from Junction City, KS bought a K&N Air Filters for a 2004 Mazda 3.
"I put K&N air filters on all cars I owned.
There are several reasons why I like these filters:
1. They don't void car's warranty.
2. They last forever. You only need to clean 'em up evrery 50K miles. The cleaning kit also gonna last you at least 2-3 car lives.
3. It slightly improves low-end torque, which makes a car accelerate quicker from a stop.
4. It has a good price/value ratio. It makes most sense if you own your car and are planning to use it for about 90-100K miles. If you lease a car though, it probably not gonna make that much sense." —Oleg R from Brooklyn, NY bought a K&N Air Filters for a 2004 Mazda 3.
"Seems to do the trick. Regardless of whether it improves performance I like the idea of having to never change my air filter again!" —David S from Monroe, GA bought a K&N Air Filters for a 2004 Mazda 3.
"I felt like my car was breathing easier from the first time I drove it after installing the filter. Don't be concerned if the filter is not as deep as the original. My fiber filter was nearly twice as thick as the K&N, but the K&N dropped right in the slot.
Don't hesitate to try yours.
Rich" —Richard C from Baltimore, MD bought a K&N Air Filters for a 2004 Mazda 3, 2.0L 4-cyl. engine.
"I have a K&N for all my vehicles. They really do help gas mileage and it's nice to not ever need to purchase another air filter." —Joshua F from Richmond, KY bought a K&N Air Filters for a 2004 Mazda 3, 2.3L 4-cyl. engine.
"This filter works great. I have a ram air setup using the stock air box, and this filter allows the engine to get the most of it. Great power, a litle better mileage." —Scott D from Gastonia, NC bought a K&N Air Filters for a 2004 Mazda 3.
"This is not my first K&N filter. After the experience of my first, I had to have one for my new car. Anyone who doesn't use one is wasting horses!!!" —Robert U from Madison, TN bought a K&N Air Filters for a 2004 Mazda 3.
"Reasonably piced alternative to the factory filter and it flows more air. When it needs it, clean 7 reuse. Beats throwing them away." —Mr. Deane F from Fountain Valley, CA bought a K&N Air Filters for a 2004 Mazda 3.
"So far so good. I've had the filters in the cars now a couple of weeks and can see the difference all ready in the performance. Still waiting to see if they will help out with the gas mileage. Great Product!!!!!!" —Craig D from Akron, OH bought a K&N Air Filters for a 2004 Mazda 3.