---
product_id: 5119884
title: "AEM 28-20304 DryFlow Air Filter"
brand: "aem"
price: "VT31922"
currency: VUV
in_stock: true
reviews_count: 13
category: "Aem"
url: https://www.desertcart.vu/products/5119884-aem-28-20304-dryflow-air-filter
store_origin: VU
region: Vanuatu
---

# Boosts horsepower & throttle response Captures 99% harmful contaminants Proudly made in the USA AEM 28-20304 DryFlow Air Filter

**Brand:** aem
**Price:** VT31922
**Availability:** ✅ In Stock

## Summary

> 🏁 Elevate your ride with clean power and precision airflow!

## Quick Answers

- **What is this?** AEM 28-20304 DryFlow Air Filter by aem
- **How much does it cost?** VT31922 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/5119884-aem-28-20304-dryflow-air-filter)

## Best For

- aem enthusiasts

## Why This Product

- Trusted aem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dust-Proof Durability:** Engineered to excel even in the harshest dusty racing conditions—no compromise on filtration.
- • **Perfect Fit Confidence:** Specifically designed for a seamless fit in your 2019 WRX Base 2.0L and similar models—installation in under 5 minutes.
- • **Race-Ready Power Boost:** Feel the surge with enhanced horsepower and razor-sharp throttle response that keeps you ahead in every drive.
- • **Eco-Smart & Cost-Saving:** Reusable filter with included decal to save on service costs and reduce waste—upgrade your ride sustainably.
- • **Oil-Free, Washable Tech:** Innovative synthetic DryFlow material means zero oil mess, easy cleaning, and long-lasting performance.

## Overview

The AEM 28-20304 DryFlow Air Filter is a high-performance, oil-free synthetic filter designed to increase horsepower and throttle response while capturing up to 99% of harmful contaminants. Made in the USA, it offers durable, washable filtration that excels in dusty racing conditions and fits perfectly in select vehicles like the 2019 WRX Base 2.0L, delivering easy installation and long-term value.

## Description

AEM Dryflow Air Filters are washable synthetic air filters designed for an optimum combination of air flow, filtration, and performance. AEM Dryflow filters use an innovative high performance oil-free filtration material that allows easy cleaning, durable service, and excellent filtration..

Review: Fits 2019 WRX Base 2.0L - I've always preferred AEM filters because they're no-oil, high build quality, and I've used AEM products about as long as I've owned cars. First off, i'd like to say "thank you" to all the WRX reviewers whose feedback i leaned on heavily to decide whether or not to take a chance on this filter. It was a risky choice given all the "doesn't fit" reviews readily found on the web. Let me say this: IT FITS PERFECTLY. On my 2019 WRX Base 2.0L. Note for future reviewers: it's really helpful if you mention your model, year, and engine. Sometimes i wasn't sure if folks had the 2.5L STI, or a WRX like mine. Anyway, i clicked the "Helpful" button for all you folks that had helpful WRX reviews. Thanks again. As was mentioned by another reviewer, despite all the web reviews that it doesn't fit -- not helped by the fact that neither desertcart nor AEM list it as a compatible part for a 2019 WRX Base -- it does. This is the same filter i put into my 2014 XV Crosstrek, with the same airbox setup, and the entire process took under 5 minutes. I'm not a super-proficient modder, i tend to stick to basic bolt-on stuff like bracing and that, but this was really easy. A couple non-pro tips: - The filter only goes in one way, by design. The pleats align vertically (unlike the OEM paper filter), and there is an embossed "AEM" logo and "DryFlow" brand mark on the TOP edge of the filter. Put it in that way and it just drops into place. Easy. - You should absolutely remove the intake duct in front of the airbox, It's so easy that *anyone* can do this, no modding experience necessary. There are two plastic pins securing the duct to the front of the engine bay. Pop them out with any flat screwdriver, the air duct pulls away easily with no force necessary. This will allow you to open the airbox wide enough to replace the filter. - Drop the new AEM filter in with "AEM" logo on top, pleats running vertical, as i mentioned. You may need to wiggle the airbox a little to open it up enough to fit the AEM filter in, but it will open up plenty wide enough with that air duct out of the way. - Refasten the airbox clips, re-attache the air duct and plastic pins. You're almost done. - AEM filters come with an AEM logo decal. This is useful to stick on your airbox (or wherever you like) to let your oil change service know that they need not even open the airbox because you have a re-usable filter. Save $20. I put mine right on the airbox cover. Clean and dry the airbox location before applying the decal, of course, so it sticks and stays. I just used Windex (my car is less than a month old) but rubbing alcohol is probably a better choice if your car has had time to build up more grime on the airbox. As for performance and engine sound: - I believe it does actually smooth things out between gears a bit, as has been mentioned, and i think the added throttle response is noticeable (but not dramatic) from around 3,000 RPM and above. Did a high-speed freeway test earlier tonight (cool summer air, around 72 degrees F, which turbo likes anyway) and it felt like i was never starved for air in the higher RPM range; there was just always power on tap, whatever i asked the car to do. Then again, it is a WRX. ;) - Engine sound: extremely subtle change, most people will probably never notice. Assuming it's not my imagination, i do think there was a subtle new engine note, again mostly surfacing around 3-4,000 RPM, that filled out the midrange with a warm, slightly fuller frequency, but -- sorry, this won't really give you an increased throaty low like some intakes i've used in the past. The WRX is already pretty good at throaty lows anyway... Hope this helps someone. I'll give one more nod to the reviewers that came before me, whose reviews gave me what i needed to make a call on this product. Ignore the plebs, this works in a Base/Premium/Limited 2.0L WRX.
Review: Great Value for the Money - Works well and fits great. Definitely an improvement over the old dirty one. It will be some time before I’ll be able to reuse it, but for the price I think it’s a great value. Note: orientation may be different from stock but functions just as well, if not better.

## Features

- Designed to increase horsepower and throttle response
- Captures up to 99% of harmful contaminants
- Outstanding performance even in dusty racing conditions
- Manufactured in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B006KBLEJO |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #336,251 in Automotive ( See Top 100 in Automotive ) #4,465 in Automotive Replacement Air Filters |
| Brand | AEM |
| Customer Reviews | 4.2 4.2 out of 5 stars (292) |
| Date First Available | December 10, 2011 |
| Exterior | Painted |
| Global Trade Identification Number | 00024844299291 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.25 pounds |
| Item model number | 28-20304 |
| Manufacturer | AEM |
| Manufacturer Part Number | 28-20304 |
| Model | AEM 28-20304 |
| OEM Part Number | 28-20304 |
| UPC | 024844299291 |

## Product Details

- **Brand:** AEM
- **Fit Type:** Vehicle Specific Fit
- **Global Trade Identification Number:** 00024844299291
- **OEM Part Number:** 28-20304
- **Product Grade:** Performance Part

## Images

![AEM 28-20304 DryFlow Air Filter - Image 1](https://m.media-amazon.com/images/I/71rEH0ou5qL.jpg)
![AEM 28-20304 DryFlow Air Filter - Image 2](https://m.media-amazon.com/images/I/51Lf5-Xl1FL.jpg)
![AEM 28-20304 DryFlow Air Filter - Image 3](https://m.media-amazon.com/images/I/51y5gyzbwNL.jpg)
![AEM 28-20304 DryFlow Air Filter - Image 4](https://m.media-amazon.com/images/I/31BQQT2q1JL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fits 2019 WRX Base 2.0L
*by D***N on August 9, 2019*

I've always preferred AEM filters because they're no-oil, high build quality, and I've used AEM products about as long as I've owned cars. First off, i'd like to say "thank you" to all the WRX reviewers whose feedback i leaned on heavily to decide whether or not to take a chance on this filter. It was a risky choice given all the "doesn't fit" reviews readily found on the web. Let me say this: IT FITS PERFECTLY. On my 2019 WRX Base 2.0L. Note for future reviewers: it's really helpful if you mention your model, year, and engine. Sometimes i wasn't sure if folks had the 2.5L STI, or a WRX like mine. Anyway, i clicked the "Helpful" button for all you folks that had helpful WRX reviews. Thanks again. As was mentioned by another reviewer, despite all the web reviews that it doesn't fit -- not helped by the fact that neither Amazon nor AEM list it as a compatible part for a 2019 WRX Base -- it does. This is the same filter i put into my 2014 XV Crosstrek, with the same airbox setup, and the entire process took under 5 minutes. I'm not a super-proficient modder, i tend to stick to basic bolt-on stuff like bracing and that, but this was really easy. A couple non-pro tips: - The filter only goes in one way, by design. The pleats align vertically (unlike the OEM paper filter), and there is an embossed "AEM" logo and "DryFlow" brand mark on the TOP edge of the filter. Put it in that way and it just drops into place. Easy. - You should absolutely remove the intake duct in front of the airbox, It's so easy that *anyone* can do this, no modding experience necessary. There are two plastic pins securing the duct to the front of the engine bay. Pop them out with any flat screwdriver, the air duct pulls away easily with no force necessary. This will allow you to open the airbox wide enough to replace the filter. - Drop the new AEM filter in with "AEM" logo on top, pleats running vertical, as i mentioned. You may need to wiggle the airbox a little to open it up enough to fit the AEM filter in, but it will open up plenty wide enough with that air duct out of the way. - Refasten the airbox clips, re-attache the air duct and plastic pins. You're almost done. - AEM filters come with an AEM logo decal. This is useful to stick on your airbox (or wherever you like) to let your oil change service know that they need not even open the airbox because you have a re-usable filter. Save $20. I put mine right on the airbox cover. Clean and dry the airbox location before applying the decal, of course, so it sticks and stays. I just used Windex (my car is less than a month old) but rubbing alcohol is probably a better choice if your car has had time to build up more grime on the airbox. As for performance and engine sound: - I believe it does actually smooth things out between gears a bit, as has been mentioned, and i think the added throttle response is noticeable (but not dramatic) from around 3,000 RPM and above. Did a high-speed freeway test earlier tonight (cool summer air, around 72 degrees F, which turbo likes anyway) and it felt like i was never starved for air in the higher RPM range; there was just always power on tap, whatever i asked the car to do. Then again, it is a WRX. ;) - Engine sound: extremely subtle change, most people will probably never notice. Assuming it's not my imagination, i do think there was a subtle new engine note, again mostly surfacing around 3-4,000 RPM, that filled out the midrange with a warm, slightly fuller frequency, but -- sorry, this won't really give you an increased throaty low like some intakes i've used in the past. The WRX is already pretty good at throaty lows anyway... Hope this helps someone. I'll give one more nod to the reviewers that came before me, whose reviews gave me what i needed to make a call on this product. Ignore the plebs, this works in a Base/Premium/Limited 2.0L WRX.

### ⭐⭐⭐⭐⭐ Great Value for the Money
*by M***S on July 22, 2025*

Works well and fits great. Definitely an improvement over the old dirty one. It will be some time before I’ll be able to reuse it, but for the price I think it’s a great value. Note: orientation may be different from stock but functions just as well, if not better.

### ⭐⭐⭐⭐ Used it for about 5 years..
*by D***Y on August 25, 2019*

After using this filter for around 5 years I recently went back to paper filters for the time being. It has shown no real signs of wear or degradation. Honestly I just got tired of taking it in and out, and trying to clean it. Basically I think it's a good product, but the design isn't really the best for the long haul. It is much deeper than a standard filter and I understand the reasoning behind this. But this means disassembling a portion of the intake each time you need to take it out. Vs simply slipping in a standard filter. The extra depth and tight pattern makes a good deep cleaning unnecessarily difficult. Large debris like bugs, leaves, and straw, embedded deep inside are nearly impossible to remove. Unless you want to go through each and every pleat and physically dig it out. I think it's reached a point where airflow is probably at or below the level of a paper filter. So why do all the extra work? The design seems to be geared more towards being able to handle extended use under extreme conditions and neglect. Not really what the average consumer who would invest in a reusable filter for their daily driver is likely to do.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-07*