---
product_id: 3414144
title: "AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red"
brand: "aem"
price: "NT$5768"
currency: TWD
in_stock: true
reviews_count: 13
category: "Aem"
url: https://www.desertcart.tw/products/3414144-aem-21-203dk-universal-dryflow-clamp-on-air-filter-round
store_origin: TW
region: Taiwan
---

# 3D synthetic media for max airflow Universal 3in flange fit Oil-free, easy cleaning AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red

**Brand:** aem
**Price:** NT$5768
**Availability:** ✅ In Stock

## Summary

> 🛠️ Upgrade your airflow game—clean, fast, and hassle-free!

## Quick Answers

- **What is this?** AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red by aem
- **How much does it cost?** NT$5768 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/3414144-aem-21-203dk-universal-dryflow-clamp-on-air-filter-round)

## 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

- • **Proven Collaboration:** Developed with K&N expertise, blending the best of cotton and synthetic tech for unmatched reliability.
- • **Zero Oil, Zero Hassle:** Say goodbye to messy oiling—this filter stays clean and efficient without any oil required.
- • **Durable & Low Maintenance:** Synthetic filter media resists wear and cleans easily, saving you time and money.
- • **Universal Fit, Instant Upgrade:** Fits any 3-inch flange setup, making it the perfect plug-and-play performance boost.
- • **Effortless High-Flow Performance:** Experience superior airflow with advanced 3D synthetic media designed for peak engine breathing.

## Overview

The AEM 21-203DK Universal DryFlow Clamp-On Air Filter features a 3-inch flange and a compact 5.125-inch height, engineered with a synthetic 3D filtering medium that maximizes airflow while eliminating the need for oiling. Designed for universal fitment, it offers easy maintenance and enhanced engine performance, developed in collaboration with K&N to deliver a cutting-edge, durable air filtration solution.

## Description

AEM Dryflow Air Filters were developed in collaboration with K&N, the inventor of High Flow Air Filters. We adopted some of the best elements of cotton air filters into a new generation synthetic Dryflow Air filter. The three-dimensional filtering medium uses both depth loading and structural screen wire to enhance airflow capabilities and make the filter incredibly easy to clean. The result is a true performance air filter that does not require oiling..

Review: Perfect fit for 2004 G35 "Nismo" CAI - I ordered this to replace the oiled filter on my Nismo CAI (actually we all know the truth now: it's a re-branded AEM!) for my 2004 G35 Coupe. The AEM site does indeed have a list of all their filters, but it's a HUGE list with some subtle differences and their support wasn't very responsive when I asked to confirm the right part number for this specific application. If you want to be sure like I did: It's a perfect fit! I was excited to move to the dry-flow since it's easier to clean, comes standard on the newer G37 intakes, was co-developed with K&N (should still flow well), and the oiled filters can cause problems with our MAFs if excess oil gets pulled up through the intake. It's a little tricky to install yourself (the main reason I wanted to be extra sure it would fit before ordering), but there are a lot of G35 forum posts showing how to do it by removing your driver side fender liner...allocate an hour to remove one wheel (the extra space is worth it), pull a few clips and metric #10 bolts and you'll be glad you did -- the car sounds better and accelerates noticeably smoother. Also, in case it helps anyone... I had the CAI installed around 2009 and replaced the filter in 2012. A number of years, but I don't drive much at all... some reported replacing it after 50k+ miles. In three years I only put ~20-30k on the car (work, grocery store, occasional road trip -- I really try to save the engine). Still, the oiled filter I replaced was (in my opinion) FILTHY! I'm hoping the dry-flow filter will "shake itself off" from bumps and other road vibration more than the oiled (like I read), but still think minimally cleaning the filter every 15-30k is a good goal for those obsessed with performance. Then again, I'm pretty OCD. :-) Go for it... You won't be sorry!
Review: Breathed a Little Life Back in My 2008 Altima! - I had installed an AEM cold air intake on my 2008 Nissan Altima 3.5 SL several years ago. That was also a Dryflow filter (though it was gray). Because you need to wait for it to dry completely before using again after a cleaning (for good reason, of course), it made the cleaning process a little inconvenient. So I wanted to pick up another filter to use while cleaning the other. I was a little skeptical because the AEM Dryflow filter that came with the intake was gray and this appeared to be red (wasn't sure if it'd be a form-fit replacement). The pipe was 3", however, so I decided to give it a shot. I'm happy to say this was indeed a perfect replacement for my current intake. Installation was of course a breeze, and throttle response is noticeable. I'll definitely be using this as the primary filter and my old one as a "backup" when cleaning this one. Highly recommended--can't go wrong here.

## Features

- Excellent filtration with great air flow
- Does not require oil
- Easy to clean
- Synthetic filter media

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000N253HA |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #126,209 in Automotive ( See Top 100 in Automotive ) #20 in Automotive Performance Air Filters #1,828 in Automotive Replacement Air Filters |
| Brand | AEM |
| Brand Name | AEM |
| Customer Reviews | 4.6 out of 5 stars 281 Reviews |
| Fit Type | Universal Fit |
| Global Trade Identification Number | 00840879014841 |
| Included Components | Air Filters - Universal Fit |
| Item Dimensions L x W x H | 5.13"L x 5.13"W x 5.13"H |
| Item Type Name | Air Filters - Universal Fit |
| Item Weight | 1.2 pounds |
| Manufacturer | AEM |
| Manufacturer Part Number | 21-203DK |
| Manufacturer Warranty Description | Manufacturer warranty |
| Model Number | 21-203DK |
| Number of Items | 1 |
| Number of Packs | 1 |
| OEM Equivalent Part Number | 21-203DK |
| OEM Part Number | 21-203DK |
| Product Dimensions | 5.13"L x 5.13"W x 5.13"H |
| Product Grade | Performance Part |
| Shape | Round |
| UPC | 840879014841 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** AEM
- **Fit Type:** Universal Fit
- **OEM Part Number:** 21-203DK
- **Product Dimensions:** 5.13"L x 5.13"W x 5.13"H
- **Product Grade:** Performance Part

## Images

![AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red - Image 1](https://m.media-amazon.com/images/I/61c0qlFYoqL.jpg)
![AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red - Image 2](https://m.media-amazon.com/images/I/51g0egki1EL.jpg)
![AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red - Image 3](https://m.media-amazon.com/images/I/81OiTK0nbFL.jpg)
![AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red - Image 4](https://m.media-amazon.com/images/I/71poWdgY7dL.jpg)
![AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red - Image 5](https://m.media-amazon.com/images/I/81IYyKiyIkL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect fit for 2004 G35 "Nismo" CAI
*by M***E on April 12, 2012*

I ordered this to replace the oiled filter on my Nismo CAI (actually we all know the truth now: it's a re-branded AEM!) for my 2004 G35 Coupe. The AEM site does indeed have a list of all their filters, but it's a HUGE list with some subtle differences and their support wasn't very responsive when I asked to confirm the right part number for this specific application. If you want to be sure like I did: It's a perfect fit! I was excited to move to the dry-flow since it's easier to clean, comes standard on the newer G37 intakes, was co-developed with K&N (should still flow well), and the oiled filters can cause problems with our MAFs if excess oil gets pulled up through the intake. It's a little tricky to install yourself (the main reason I wanted to be extra sure it would fit before ordering), but there are a lot of G35 forum posts showing how to do it by removing your driver side fender liner...allocate an hour to remove one wheel (the extra space is worth it), pull a few clips and metric #10 bolts and you'll be glad you did -- the car sounds better and accelerates noticeably smoother. Also, in case it helps anyone... I had the CAI installed around 2009 and replaced the filter in 2012. A number of years, but I don't drive much at all... some reported replacing it after 50k+ miles. In three years I only put ~20-30k on the car (work, grocery store, occasional road trip -- I really try to save the engine). Still, the oiled filter I replaced was (in my opinion) FILTHY! I'm hoping the dry-flow filter will "shake itself off" from bumps and other road vibration more than the oiled (like I read), but still think minimally cleaning the filter every 15-30k is a good goal for those obsessed with performance. Then again, I'm pretty OCD. :-) Go for it... You won't be sorry!

### ⭐⭐⭐⭐⭐ Breathed a Little Life Back in My 2008 Altima!
*by K***S on January 23, 2017*

I had installed an AEM cold air intake on my 2008 Nissan Altima 3.5 SL several years ago. That was also a Dryflow filter (though it was gray). Because you need to wait for it to dry completely before using again after a cleaning (for good reason, of course), it made the cleaning process a little inconvenient. So I wanted to pick up another filter to use while cleaning the other. I was a little skeptical because the AEM Dryflow filter that came with the intake was gray and this appeared to be red (wasn't sure if it'd be a form-fit replacement). The pipe was 3", however, so I decided to give it a shot. I'm happy to say this was indeed a perfect replacement for my current intake. Installation was of course a breeze, and throttle response is noticeable. I'll definitely be using this as the primary filter and my old one as a "backup" when cleaning this one. Highly recommended--can't go wrong here.

### ⭐⭐⭐⭐⭐ Fits my 2017 Subaru WRX
*by J***A on July 26, 2024*

Fits my wrx. I was using the Big sf intake, so if u want an alternative without having to retune again, this does the trick since it fits the perfect 1inch mark you need for these cars. Just make sure no debris is inside it, i had some small plastic pieces i had to get out.

## Frequently Bought Together

- AEM 21-203DK Universal DryFlow Clamp-On Air Filter: Round Tapered; 3 in (76 mm) Flange ID; 5.125 in (130 mm) Height; 6 in (152 mm) Base; 5.125 in (130 mm) Top, Red
- AEM 14000 Air Filter Wrap, black (1-4000)
- AEM 1-1000 Air Filter Cleaner with Trigger Sprayer - 32 oz.

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-10-10*