aFe Cold Air Intake

2011–2012 Chrysler 300 / Dodge Challenger / Dodge Charger 6.4L 392 HEMI

Part #: 51-12172

Overview

The aFe Cold Air Intake Stage-2 system is a direct bolt-on upgrade designed specifically for the 2011 and 2012 Chrysler 300C, Dodge Challenger, and Dodge Charger equipped with the 6.4L 392 HEMI engine. Engineered to unlock your vehicle’s true performance potential, this intake system significantly improves airflow, horsepower, and torque without compromising reliability or daily drivability. Whether you’re a performance enthusiast seeking enhanced throttle response or a daily driver looking for a smooth power boost, the aFe Stage-2 Cold Air Intake offers a balanced solution that elevates your driving experience.

With a focus on quality, durability, and ease of installation, this system replaces the restrictive factory intake with a high-flow design that delivers cooler, denser air to your engine. The result is improved volumetric efficiency, increased power output, and a more aggressive engine sound that complements the muscular character of your 6.4L HEMI.

Key Features

The aFe Stage-2 Cold Air Intake system incorporates advanced engineering and premium materials to maximize performance and longevity. Key features include:

• Up to 12% increased airflow compared to the factory intake for enhanced engine breathing
• Potential gains of up to 18 horsepower and 22 lb-ft of torque for noticeable performance improvements
• Heat-insulating roto-molded intake tube designed to reduce heat soak and improve volumetric efficiency
• Durable, powder-coated 18-gauge steel heat shield to protect the intake charge from engine heat
• Heavy-duty stainless steel T-bolt clamps for secure, vibration-resistant installation
• Silicone throttle body adapter ensuring a leak-free seal and long-lasting connection
• Direct bolt-on design using all factory mounting points—no cutting or drilling required

Filter Options

The system offers two high-performance air filter options tailored to different driving needs:

• Pro 5R (Oiled): Features five layers of progressively finer cotton gauze for maximum airflow and filtration efficiency. This washable and reusable filter is ideal for both street and track use, delivering long-term performance with easy maintenance.
• Pro DRY S (Dry): Constructed from three layers of oil-free synthetic media, this filter provides 99.2% filtration efficiency without the need for oiling. Perfect for street and light off-road applications, it offers hassle-free upkeep and dependable protection.

Construction & Design

The aFe Stage-2 Cold Air Intake is built with premium materials and precision engineering to ensure durability and optimal performance. The intake tube is roto-molded from heat-insulating plastic, which resists heat soak and maintains cooler air temperatures for improved combustion. The one-piece heat shield is crafted from heavy-duty 18-gauge steel and finished with a powder-coated surface to withstand harsh engine bay conditions while effectively blocking heat.

Both filter options are constructed from 100% polyurethane media designed for multiple cleaning cycles and years of dependable use. The entire assembly is engineered for a secure fit and long-lasting performance, making it a reliable upgrade for your 6.4L HEMI-powered vehicle.

Performance & Sound

By increasing airflow and reducing intake restrictions, the aFe Cold Air Intake system enhances throttle response and engine efficiency. Drivers can expect up to 18 additional horsepower and 22 lb-ft of torque, translating to stronger acceleration and improved overall performance. The intake also produces a more aggressive and sporty induction sound, adding an engaging auditory element to your driving experience without being intrusive.

Installation & Fitment

The aFe Stage-2 Cold Air Intake is designed for a straightforward installation process that requires no cutting, drilling, or modifications. It utilizes all existing factory mounting points to ensure a secure and precise fit on 2011–2012 Chrysler 300C, Dodge Challenger, and Dodge Charger models equipped with the 6.4L 392 HEMI engine. Installation can typically be completed with basic hand tools, making it accessible for enthusiasts and professional installers alike.

What's Included

• Roto-molded plastic intake tube
• Powder-coated 18-gauge steel heat shield
• Choice of Pro 5R (oiled) or Pro DRY S (dry) air filter
• Silicone throttle body adapter
• Heavy-duty stainless steel T-bolt clamps
• All necessary mounting hardware and instructions

Ideal For

This cold air intake system is perfect for performance enthusiasts seeking a reliable and effective upgrade to boost power and throttle response on their 6.4L HEMI Chrysler 300, Dodge Challenger, or Dodge Charger. It also suits daily drivers who want improved engine efficiency and a more aggressive induction sound without sacrificing drivability or requiring complex installation.

aFe POWER (Advanced FLOW Engineering) offers dyno-proven intake, filtration, and exhaust upgrades aimed at measurable performance gains. The brand’s lineup is geared toward enthusiasts looking for better airflow, improved sound, and durable materials—from cold air intakes to stainless exhaust systems for street and track applications.