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Performance Cold Air Intake w/ Heat Shield | 2003-2007 Ram 5.9L Cummins

Give Your 5.9L Cummins the Ultimate Breathing Upgrade.
The 2003-2007 Dodge Ram 5.9L Cummins is a legendary torque monster, but heavy OEM air boxes and under-hood heat choke its legendary potential. The SPELAB Performance Cold Air Intake System re-engineers your truck's breathing by positioning the high-flow filter outside the heat-soaked engine bay—shielded by a heavy-duty thermal barrier—to feed your turbocharger the absolute coolest, densest air possible.

More oxygen means a massive, more explosive combustion, translating directly into brutal off-the-line torque and relentless towing horsepower. By precision-tuning the intake tube's length and diameter to sync with your Cummins’ exact acoustic resonance, we’ve eliminated restrictions and maximized air velocity. Unleash your engine's true volumetric efficiency and experience crisp throttle response across the entire RPM band.

Key Features

• Relentless Cummins Power & Torque: Noticeably boosts low-end torque and peak horsepower—crucial for improving towing confidence, acceleration, and passing power under heavy loads.
• Rugged Thermal Heat Shield: Equipped with a heavy-duty insulation barrier that blocks power-robbing under-hood heat, ensuring only dense, ice-cold air charges your turbo.
• Iconic 5.9L Turbo Whistle: Removes restrictive factory air boxes and sound baffles, allowing your turbocharger to spool up freely and unleash its classic, aggressive diesel roar under heavy throttle.
• Streamlined High-Velocity Airflow: Engineered with smooth, high-flow piping that eliminates air turbulence and restrictions common with wrinkled factory plastic tubes.
• Improved Fuel Efficiency: Optimizes your diesel’s air-to-fuel ratio, allowing the engine to burn fuel more efficiently and boosting your MPG under heavy load.

Specification

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Fitment

• 2003-2007 Dodge Ram 2500 3500 5.9L L6 Diesel Engine

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FAQ

Q1: What a cold air intake does? 
A1: A cold air intake allows cooler, less restricted airflow, improving throttle response, intake sound, and turbo breathing—though gains vary by engine, tune, and factory setup. Benefits range from performance boosts to practical diesel needs like cleaner flow and stable towing response, but horsepower and MPG gains are not guaranteed.

Q2: Does a cold air intake increase mpg?
A1: Cold air intakes improve combustion efficiency by delivering denser, oxygen-rich air, enabling more power with less fuel. A high-flow filter optimizes airflow for better performance and economy. However, the ECU may compensate by increasing fuel usage if combustion is incomplete, which can offset some gains.

Q3: Will Cold Air Intake Improve Fuel Efficiency?
A3: The MPG benefits of cold air intakes are debated, but the principle is clear: they supply more air to the engine, enabling better combustion and increased horsepower. While some question their effectiveness, cooler, denser airflow can improve fuel efficiency and save petrol, making it a worthwhile upgrade for many vehicles.

Q4: What Is the Real Effect Of Cold Air Intake?
A4: Mechanics recommend cold air intakes because colder air burns more efficiently due to higher oxygen content. This upgrade boosts horsepower, improves throttle responsiveness, and enhances overall speed. By delivering more cold air to the engine, the system ensures better combustion and sharper vehicle reaction, making it a practical performance enhancement.

Q5: Is A Cold Air Intake Worth It?
A5: A cold air intake is a worthwhile investment, strongly recommended by experts. It delivers significant benefits, including increased engine horsepower and improved performance. Upgrading with quality aftermarket parts is a smart move, making the cost well justified for the gains in power and driving response.

Q6: How much hp does a cold air intake add? 
A6: A cold air intake boosts engine performance by increasing airflow. While exact horsepower gains vary, typical improvements range from 5–20 hp. For turbocharged or supercharged engines, the power increase is even more significant, making it a highly effective upgrade for forced-induction vehicles.