---
product_id: 2798327
title: "AEM 21-678C Gun Metal Cold Air Intake System"
brand: "aem"
price: "AR$1970575"
currency: ARS
in_stock: true
reviews_count: 10
category: "Aem"
url: https://www.desertcart.com.ar/products/2798327-aem-21-678c-gun-metal-cold-air-intake-system
store_origin: AR
region: Argentina
---

# 17 HP gain @ 4100 RPM Lifetime DRYFLOW synthetic filter Proudly made in USA AEM 21-678C Gun Metal Cold Air Intake System

**Brand:** aem
**Price:** AR$1970575
**Availability:** ✅ In Stock

## Summary

> 🏁 Power, Precision, and Pure Performance – Upgrade Your Drive Today!

## Quick Answers

- **What is this?** AEM 21-678C Gun Metal Cold Air Intake System by aem
- **How much does it cost?** AR$1970575 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/2798327-aem-21-678c-gun-metal-cold-air-intake-system)

## 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

- • **Iconic Whoosh Sound:** Turn heads with that addictive, aggressive intake sound that signals serious upgrades.
- • **Lifetime Dryflow Filter:** Oil-free, washable, and engineered for superior filtration—performance that lasts a lifetime.
- • **Unleash 17 Extra Horses:** Feel the surge of 17 HP boost at 4100 RPM—your ride’s new power anthem.
- • **Precision Engineered Fit:** Vehicle-specific design ensures seamless installation and optimal airflow.
- • **Heat-Shielded Performance:** Powder-coated heat shield reduces intake temps for cooler, denser air and max torque.

## Overview

The AEM 21-678C Gun Metal Cold Air Intake System delivers a measurable 17 HP increase at 4100 RPM, featuring a lifetime DRYFLOW synthetic air filter for superior filtration without oiling. Manufactured in the USA, this vehicle-specific intake system combines mandrel-bent aluminum tubing and a powder-coated heat shield to reduce intake temperature and restriction, enhancing both engine sound and performance for discerning drivers seeking a reliable, high-impact upgrade.

## Description

AEM Air Intake Systems are designed to produce massive horsepower and torque gains as well as better engine sound when used as a replacement for the factory airbox and air filter. AEM intake systems are designed, tuned, and dyno-tested to fit specific cars and trucks. These air intakes usually include an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration, and performance while allowing easy oil-free cleaning. Most AEM intake systems use mandrel-bent aluminum intake tubes, powder coated heat shields, and high quality hardware designed to reduce restriction and reduce intake temperature. The design and components of each intake system vary so consult the installation instructions for more information on the contents of each part number. AEM manufactures a variety of intake kit styles including short ram intakes, cold air intakes, dual-chamber intakes, Brute Force intakes for trucks and SUV's, and Brute Force HD intakes for diesel applications.

Review: awesome - i have an 08 GSR and the stock tune was really rich, so getting a CAI helps lean out the AFR. Box is nice, better protected, and still produces that addicting whooshing sound from the extra air flow. without a tune I'm getting about 2 mpg's better when i am behaving. By the way, if you are ever buying a part for your car, alwayyyys do a bit of extra research to make sure everything is what you want. Forums had this stuff everywhere. For $255 shipped, can't beat it. install was tough because of some of the evo's piping, but got it done in about 2 and a half hours and it was my first install for an intake. great product for a great car.
Review: Perfect for my EVO X. - This cold air intake system is just perfect for my needs. I originally was interested in the concealed filter/powdercoated heatshield, but have come to realize that It's worth the price for the bolt on simplicity of it, and is said to add about a 16-20 HP gain @ 4100 RPM (depending on your tune). All in all, I like the way the unit looks, it's very aesthetically pleasing. The install was pretty average. Hate with a passion the rubber grommet material used to isolate the air box/intake module. It's not flexible and sits poorly. That's the only complaint I have, so far.

## Features

- Estimated horsepower gain of 17.0 HP at 4100 RPM
- All AEM Air Intakes come with a lifetime DRYFLOW Synthetic air filter with great filtration
- Manufactured in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001DX9GPI |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #3,810,707 in Automotive ( See Top 100 in Automotive ) #4,274 in Automotive Replacement Air Intake Filters |
| Brand | AEM |
| Brand Name | AEM |
| Customer Reviews | 4.0 out of 5 stars 15 Reviews |
| Fit Type | Vehicle Specific Fit |
| Global Trade Identification Number | 00840879018917 |
| Included Components | Cold Air Intakes |
| Item Type Name | Cold Air Intakes |
| Item Weight | 4.1 kg |
| Manufacturer | AEM |
| Manufacturer Part Number | 21-678C |
| Manufacturer Warranty Description | Manufacturer warranty |
| Model Number | 21-678C |
| Number of Items | 1 |
| OEM Equivalent Part Number | 21-678C |
| OEM Part Number | 21-678C |
| Product Grade | Replacement Part |
| UPC | 840879018917 |
| Unit Count | 1 Count |

## Product Details

- **Product Grade:** Replacement Part
- **Brand:** AEM
- **Fit Type:** Vehicle Specific Fit
- **OEM Part Number:** 21-678C
- **Global Trade Identification Number:** 00840879018917

## Images

![AEM 21-678C Gun Metal Cold Air Intake System - Image 1](https://m.media-amazon.com/images/I/31dtp30f8fL.jpg)
![AEM 21-678C Gun Metal Cold Air Intake System - Image 2](https://m.media-amazon.com/images/I/81h3SXWI-SL.jpg)
![AEM 21-678C Gun Metal Cold Air Intake System - Image 3](https://m.media-amazon.com/images/I/71XlPZTCOJL.jpg)
![AEM 21-678C Gun Metal Cold Air Intake System - Image 4](https://m.media-amazon.com/images/I/816d2iL16ZL.jpg)
![AEM 21-678C Gun Metal Cold Air Intake System - Image 5](https://m.media-amazon.com/images/I/71NF1YV49uL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ awesome
*by Z***E on January 13, 2014*

i have an 08 GSR and the stock tune was really rich, so getting a CAI helps lean out the AFR. Box is nice, better protected, and still produces that addicting whooshing sound from the extra air flow. without a tune I'm getting about 2 mpg's better when i am behaving. By the way, if you are ever buying a part for your car, alwayyyys do a bit of extra research to make sure everything is what you want. Forums had this stuff everywhere. For $255 shipped, can't beat it. install was tough because of some of the evo's piping, but got it done in about 2 and a half hours and it was my first install for an intake. great product for a great car.

### ⭐⭐⭐⭐ Perfect for my EVO X.
*by C***E on April 2, 2014*

This cold air intake system is just perfect for my needs. I originally was interested in the concealed filter/powdercoated heatshield, but have come to realize that It's worth the price for the bolt on simplicity of it, and is said to add about a 16-20 HP gain @ 4100 RPM (depending on your tune). All in all, I like the way the unit looks, it's very aesthetically pleasing. The install was pretty average. Hate with a passion the rubber grommet material used to isolate the air box/intake module. It's not flexible and sits poorly. That's the only complaint I have, so far.

### ⭐⭐⭐⭐⭐ Fantastic! All hardware was included in this kit for ...
*by A***R on July 10, 2014*

Fantastic! All hardware was included in this kit for a complete install. Great quality product. Perfect fit on my evo x. Looks like it came from factory. Will highly recommend. Also it did not throw a check engine light. AEM did their homework on this one!

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-09-08*