aFe Momentum HD Cold Air Intake System

2007–2009 Dodge Ram 2500 / Ram 3500 5.7L / 6.7L Cummins

Part #: 51-72003

Overview

The aFe Momentum HD Cold Air Intake System is a precision-engineered performance upgrade designed specifically for 2007 to 2009 Dodge Ram 2500 and Ram 3500 trucks equipped with 5.7L gas or 6.7L Cummins diesel engines. This system replaces the factory airbox and filter with a custom roto-molded housing and a high-flow Pro DRY S air filter, delivering cooler, denser air to the engine for improved combustion efficiency.

Ideal for truck owners seeking a reliable and straightforward performance enhancement, the Momentum HD intake system boosts horsepower, torque, and throttle response while maintaining excellent filtration to protect your engine. It offers a balanced upgrade that enhances power and fuel economy without compromising engine safety or requiring complex modifications.

Key Features

Engineered for durability and performance, the Momentum HD Cold Air Intake System includes:

• Custom CAD-designed roto-molded housing made from heat-resistant black cross-linked polyethylene for superior thermal insulation and long-lasting durability
• Large clear sight window for quick and easy filter inspection without removing the airbox
• High-quality billet aluminum crankcase fitting for secure and straightforward installation
• CAD-engineered air scoop that efficiently directs cool ambient air to the performance air filter
• Sealed intake design featuring a radial flow Pro DRY S air filter with three oil-free synthetic media layers for excellent airflow and 99.2% filtration efficiency
• Premium stainless steel clamps and silicone couplings for secure, vibration-resistant connections
• One-piece airbox and heat shield that seals tightly against the hood liner to isolate the filter from engine heat
• 3-angle velocity stack to smooth airflow transition and maximize power gains
• Designed for quick, bolt-on installation with no cutting, drilling, or modifications required

Construction & Design

The Momentum HD intake system features a roto-molded housing crafted from black cross-linked polyethylene, a heat-resistant plastic that helps maintain cooler intake air temperatures for optimal engine performance. The one-piece airbox and heat shield are constructed from rugged 16-gauge powder-coated steel, providing durability and effective thermal isolation from engine heat.

Additional design elements include a large clear inspection window for easy maintenance checks and a billet aluminum crankcase fitting that enhances installation and functionality. Premium stainless steel hardware and silicone couplings ensure a secure, long-lasting fit that withstands vibration and harsh operating environments.

Performance & Sound

By increasing the volume of cooler, denser air entering the engine, the aFe Momentum HD Cold Air Intake System improves combustion efficiency, resulting in noticeable gains in horsepower and torque. The radial flow Pro DRY S filter media allows approximately twice the airflow of a stock air filter while maintaining a 99.2% filtration efficiency rating, protecting your engine from harmful contaminants.

This intake system also enhances throttle response and can contribute to improved fuel economy. Additionally, it produces a subtle yet aggressive induction sound that enhances the driving experience without excessive noise, providing a refined performance tone.

Installation & Fitment

The Momentum HD Cold Air Intake System is designed for a direct bolt-on installation that replaces the factory airbox and filter with no cutting, drilling, or modifications required. The kit includes all necessary hardware and detailed instructions, allowing installation in an hour or less using basic hand tools.

The sealed airbox design fits perfectly under the hood and seals tightly against the hood liner to keep hot engine air away from the intake. This system is engineered specifically to fit 2007 to 2009 Dodge Ram 2500 and Ram 3500 trucks with 5.7L gas or 6.7L Cummins diesel engines, ensuring a precise and secure fit.

What's Included

• Roto-molded intake housing with clear inspection window
• Pro DRY S radial flow performance air filter with synthetic media
• Billet aluminum crankcase fitting
• CAD-designed air scoop
• Silicone couplings and premium stainless steel clamps
• Powder-coated steel one-piece airbox and heat shield
• All necessary mounting hardware
• Comprehensive installation instructions

Ideal For

This intake system is perfect for Dodge Ram 2500 and Ram 3500 owners from model years 2007 to 2009 who want to enhance their truck’s performance without extensive modifications. It suits enthusiasts and daily drivers alike looking for a reliable, efficient upgrade that improves power, throttle response, and fuel economy while maintaining excellent engine protection. Its straightforward installation makes it an excellent choice for DIY mechanics and budget-conscious drivers seeking a high-quality cold air intake solution.

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 Chrysler 300C /  Dodge Challenger / Charger / Magnum 5.7L Hemi & 6.1L SRT8

E3.66

The E3.66 Spark Plug is engineered for superior combustion efficiency and long-lasting performance, making it an ideal upgrade for your vehicle engines. Featuring E3’s patented DiamondFIRE technology, the plug delivers enhanced power, better throttle response, improved fuel economy, and reduced emissions. The three-legged ground electrode secures the plug’s DiamondFIRE tip to the shell, maximizing turbulence and heat transfer within the combustion chamber. Built with a fixed gap for consistency and a nickel-plated shell to resist corrosion, the E3.66 is made to last for 5 years or 100,000 miles—whichever comes first.

• Patented DiamondFIRE Technology: Enhances flame kernel propagation, resulting in increased power and fuel efficiency.
• Triple Ground Electrode Design: Ensures excellent heat dissipation and stability under extreme engine conditions.
• Fixed Gap Design: Precision pre-set for optimal performance; no gapping required.
• Longevity & Durability: Rated for up to 100,000 miles or 5 years of dependable use.
• Improved Emissions: Helps reduce hydrocarbon emissions for cleaner engine operation.
• High-Quality Construction: 14mm thread diameter, 1.000" reach, 5/8" hex size, and corrosion-resistant shell with a taper seat.