---
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: "4806824₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Aem"
url: https://www.desertcart.vn/products/3414144-aem-21-203dk-universal-dryflow-clamp-on-air-filter-round
store_origin: VN
region: Vietnam
---

# Durable red painted finish Oil-free, easy cleaning High airflow design 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:** 4806824₫
**Availability:** ✅ In Stock

## Summary

> 🔴 Elevate your ride with the filter that works as hard as you do.

## 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?** 4806824₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/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

- • **Built to Last:** Robust red painted exterior resists wear and adds a sleek pop under the hood.
- • **Pro-Grade Filtration:** Collaboratively developed with K&N to trap dust and debris while optimizing performance.
- • **Maintenance Made Simple:** No oiling required—just rinse and reuse for hassle-free upkeep.
- • **Perfect Fit, Proven Results:** Universal clamp-on design fits 3-inch flanges, delivering smooth acceleration and engine protection.
- • **Unmatched Airflow Efficiency:** Engineered with 3D synthetic media for maximum air intake without compromise.

## Overview

The AEM 21-203DK Universal DryFlow Clamp-On Air Filter features a 3-inch flange and a compact 5.125-inch height, combining advanced synthetic filtration media with a no-oil, easy-clean design. Developed alongside K&N, it offers superior airflow and dust protection in a durable red painted housing, making it a top choice for performance enthusiasts seeking reliable, low-maintenance air filtration.

## 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: Quality product - My mechanic recommended I replace my K&N filter for this one. Should be much better for offroad dust. Initial assessment is this is a quality product and appears to allow the necessary quantity of air to my Jeep.
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!

## Features

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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000N253HA |
| Best Sellers Rank | #298,404 in Automotive ( See Top 100 in Automotive ) #49 in Automotive Performance Air Filters #3,726 in Automotive Replacement Air Filters |
| Brand | AEM |
| Customer Reviews | 4.5 4.5 out of 5 stars (273) |
| Date First Available | February 13, 2005 |
| Exterior | Painted |
| Global Trade Identification Number | 00840879014841 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.2 pounds |
| Item model number | 21-203DK |
| Manufacturer | AEM |
| Manufacturer Part Number | 21-203DK |
| Model | AEM 21-203DK |
| OEM Part Number | 21-203DK |
| Product Dimensions | 5.13"L x 5.13"W x 5.13"H |
| Shape | Round |
| UPC | 840879014841 |

## Product Details

- **Brand:** AEM
- **Fit Type:** Vehicle Specific 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/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 2](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 3](https://m.media-amazon.com/images/I/71Yh9QyMDRL.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/71ZR4svQQEL.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/71poWdgY7dL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality product
*by S***B on January 4, 2026*

My mechanic recommended I replace my K&N filter for this one. Should be much better for offroad dust. Initial assessment is this is a quality product and appears to allow the necessary quantity of air to my Jeep.

### ⭐⭐⭐⭐⭐ 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!

### ⭐⭐⭐⭐⭐ Better than the original filter
*by M***E on August 31, 2025*

Cheaper than the other stores the quality is better than the original filter better airflow

## 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.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/3414144-aem-21-203dk-universal-dryflow-clamp-on-air-filter-round](https://www.desertcart.vn/products/3414144-aem-21-203dk-universal-dryflow-clamp-on-air-filter-round)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-01*