aFe Magnum FORCE Stage-2 Cold Air Intake System

Jeep Commander / Grand Cherokee 05-10 5.7L Hemi

Part #: 51-10242

Overview

The aFe Magnum FORCE Stage-2 Cold Air Intake System is engineered to enhance the performance of your Jeep Grand Cherokee WK or Jeep Commander equipped with the 5.7L HEMI engine from 2005 to 2010. Designed for enthusiasts seeking increased horsepower, improved throttle response, and a more aggressive intake sound, this intake system delivers a significant upgrade over the factory air intake. It provides a reliable, long-lasting solution that combines superior airflow with durable construction, making it ideal for daily drivers and off-road adventurers alike.

With its precision-engineered components, the Stage-2 Cold Air Intake System optimizes airflow dynamics to maximize engine efficiency and power output. This system is perfect for Jeep owners who want to unlock the full potential of their HEMI engine without compromising reliability or requiring extensive modifications.

Key Features

The aFe Magnum FORCE Stage-2 Cold Air Intake System incorporates advanced design elements and high-quality materials to ensure outstanding performance and durability:

• One-piece 16-gauge powder-coated steel heat shield that requires no cutting or drilling for installation
• Stylish powder-coated steel or brushed aluminum cover that blocks engine heat and directs cold air to the filter
• Precision molded plastic intake tube engineered to maximize airflow volume and velocity
• High-flow Pro DRY S air filter featuring 360-degree filtration for superior airflow and engine protection
• Washable and reusable filter media with a limited lifetime warranty for long-term use
• Heat shield design reduces intake air temperatures, improving combustion efficiency
• Quiet intake operation that reduces unwanted noise while enhancing engine sound
• Direct bolt-on installation with no modifications required

Construction & Design

The system’s heat shield is crafted from durable 16-gauge steel with a powder-coated finish to resist corrosion and withstand harsh under-hood conditions. The intake tube is precision molded from high-quality plastic to provide smooth airflow with minimal turbulence, ensuring optimal air velocity and volume. The Pro DRY S filter utilizes advanced synthetic media that delivers excellent filtration efficiency while maintaining high airflow rates. This combination of materials and engineering results in a robust intake system built to last and perform under demanding conditions.

Performance & Sound

The Magnum FORCE Stage-2 Cold Air Intake System is designed to increase horsepower and torque by improving the engine’s breathing capability. By drawing in cooler, denser air and reducing intake restrictions, this system helps your 5.7L HEMI engine achieve better combustion and throttle response. Additionally, the intake produces a refined, aggressive sound that enhances the driving experience without excessive noise, striking a balance between performance and comfort.

Installation & Fitment

Installation is straightforward and user-friendly, requiring no cutting, drilling, or permanent modifications to your vehicle. The one-piece heat shield and direct-fit intake tube are engineered to fit precisely within the engine bay of the 2005–2010 Jeep Grand Cherokee WK and 2006–2010 Jeep Commander 5.7L HEMI models. Most installations can be completed with basic hand tools in under an hour, making it accessible for both professional installers and experienced enthusiasts.

What's Included

• One-piece 16-gauge powder-coated steel heat shield
• Precision molded plastic intake tube
• High-flow aFe Pro DRY S air filter (washable and reusable)
• All necessary mounting hardware and clamps
• Detailed installation instructions

Ideal For

This cold air intake system is ideal for Jeep Grand Cherokee WK and Commander owners who want to improve engine performance, increase airflow, and enjoy a more aggressive intake sound without sacrificing reliability or requiring complex installation. It suits daily drivers, weekend warriors, and off-road enthusiasts looking to enhance their vehicle’s power and efficiency with a proven, high-quality aftermarket upgrade.

Ripp HEMI High Performance Coil Packs

05-25 5.7L, 6.1L, 6.2L, & 6.4L  HEMI Engines

MV8-CPK (8 Coilpacks)

Our coil pack is engineered from the ground up with higher quality materials, and increased amount of windings (turn ratio) in the primary and secondary winding. This provides a boost in millijoule power output, and this results in an increase in spark energy. With a stronger spark, cylinder flame speed is increased and thus adding up to an additional 20hp on the 5.7L and 25-30whp on the 6.4L. With this increased power output, you can expect a more responsive throttle input and a better driving experience overall. (For more technical information please see the tech notes below.)

Don't forget a fresh set of spark plugs. We recommend NGK Spark Plugs.

• Each order Includes all 8 coilpacks
• Direct bolt-on installation, plug and play
• Highest quality internal components and finish
• MOPAR Orange, Purple, Green or Steel Gray high temperature heat resistant outer housing 
• Heat resistant silicone boot
• Compatible with Naturally Aspirated and Forced Induction engines
• Improved Throttle Response
• Improved POWER
• Improved MPG
• No Tuning Required!!
• Heavy duty primary copper core winding.
• Higher quality Iron core with stronger laminations.
• Increased amount of secondary core windings.
• Precision Spool to promote Orthocycling winding and mitigate wild winding.  
• Sustained power delivery even at high RPM operation
• High Density Polymer Housing. 
• Heavy Duty, high-temperature, epoxy filled housing resists shock and vibration. Our dielectric compound completely penetrates coil windings assuring perfect insulation even upon exposure to high voltage conditions. Engineered to resist humidity, wear, vibration, impact and chemicals such as gasoline, oils and brake fluids. Will not degrade or crack even under severe thermal cycling.

*Not compatible with older generation 2003-2005 "gen III" engines.*   Please double check the year make and model of your vehicle and engine type. 

Fits the following vehicles:

• 2005 - Current: Dodge Charger/ Challenger V8
• 2005 - Current: Chrysler 300 V8
• 2007 - Current: RAM 1500 V8 (note: early 2007 vehicles might have have a gen III engine)
• 2007 - Current: Jeep Grand Cherokee V8 (note: early 2007 vehicles might have have a gen III engine) 5.7, SRT 
• 2007 - Current: Dodge Durango V8 (note: early 2007 vehicles might have have a gen III engine) 5.7, SRT
• 2021 - Current: Jeep Wrangler rubicon w/ 392 engine (V8)
• All Scat Pack, 392, SRT and Hellcat models.
• And many more V8 Hemi vehicles. 

TECH NOTES

RIPP Technical information about cylinder flame speed and how an upgraded ignition system will directly effect power. 

An Internal combustion engine's "flame speed" refers to the rate at which the air-fuel mixture burns during the combustion process. This speed significantly impacts engine performance and efficiency. The faster flame speed will increase cylinder pressure. When a spark is hotter, it ignites the air-fuel mixture more rapidly, leading to faster combustion, and an increase in pressure. Higher cylinder pressure = more torque pushing down on the piston.

Flame front propagation speed: As the flame front propagates faster across the combustion chamber, the fuel burns more efficiently, releasing more energy. This, in turn, enhances the engine's power and responsiveness. Additionally, with a faster flame speed, the combustion process is completed sooner, reducing the chance of incomplete burn or unburned hydrocarbons being released into the exhaust gases. In summary, optimizing the flame speed by utilizing more spark energy can significantly improve engine performance. It enables the engine to operate more efficiently, delivering increased power output, improved fuel economy.

Spark Energy is measured in Millijoules (mj). A Factory coilpack will generate 35.8mj. This mj value is considered low for the cylinder displacement value, piston surface area and air/fuel mixture. A RIPP coilpack will generate 53.6mj. This 17.8mj increase over stock will dramatically increase pressure per square inch across the piston surface. At first start up you'll immediately notice a smoother operating engine, and a "calmer" exhaust tone. This is due to less waste or unburnt hydrocarbons and fuel. Engine response and engine horse power will increase throughout the RPM range. 

E3 Spark Plugs

05-10 Dodge Ram /  Durango / Jeep Grand Cherokee 5.7L Hemi & 6.1L SRT8

E3.66

The E3.66 Automotive Spark Plug is engineered for high-performance vehicle engines found in select vehicle. Built with advanced ignition technology, it features E3’s patented DiamondFIRE electrode design, delivering superior combustion efficiency, faster flame propagation, and enhanced power output. This unique design generates intense turbulence in the combustion chamber, leading to better throttle response, fuel economy, and cleaner emissions. Constructed with a resistor, 5/8" hex size, and a fixed DiamondFIRE gap, the E3.66 plug fits 14mm thread diameter applications with a 1.000" reach and taper seat, making it a perfect fit for late-model HEMI V8 engines. It’s not just about power—it’s about long-lasting performance. Backed by a 5-year or 100,000-mile guarantee, the E3.66 plug ensures peace of mind for the road ahead.

• Advanced Electrode Design: Patented DiamondFIRE side wire promotes complete combustion for more power and better efficiency.
• Improved Performance: Increases horsepower, enhances throttle response, and reduces hydrocarbon emissions.
• Durability: 5-year / 100,000-mile limited warranty.

Construction:

• Resistor Type
• Thread Diameter: 14mm
• Thread Reach: 1.000”
• Seat Type: Taper
• Hex Size: 5/8”
• Tip: Fixed Gap – not adjustable
• Enhanced Heat Transfer: Three-legged design stabilizes the electrode for reliable ignition and heat dissipation.