7 Best Cold Air Intakes for 6.6 Duramax

7 Best Cold Air Intakes for 6.6 Duramax

If you’re looking to improve your 6.6 Duramax diesel engine’s performance, a high-quality cold air intake is one of the most effective upgrades. By delivering a greater volume of cool air to the engine, these systems increase combustion efficiency, resulting in more power, better fuel economy, and overall enhanced engine performance. Here’s a rundown of the seven best cold air intakes for the 6.6 Duramax engine, along with what makes each option unique.


1. S&B Filters Cold Air Intake System

  • Performance Gains: S&B Filters is known for delivering substantial horsepower and torque improvements. Its cold air intake systems are designed to provide up to a 50% increase in airflow over stock intakes.
  • Features: This system features an enclosed airbox that keeps the engine’s hot air from being pulled into the intake. It includes a custom-designed filter that maximizes airflow without sacrificing filtration.
  • Ease of Installation: It’s a straightforward installation with detailed instructions and does not require additional modifications.

2. Banks Ram-Air Intake System

  • Performance Gains: Banks’ Ram-Air system is engineered to increase throttle response, fuel efficiency, and horsepower. It uses a high-flow air filter that allows for 31% more air intake than stock.
  • Features: This intake system includes a large, oversized housing that seals out hot air from the engine compartment and allows cooler, denser air for combustion.
  • Durability: Built to withstand high engine temperatures, the Banks Ram-Air system comes with a lifetime warranty, ensuring long-term reliability.

3. AIRAID MXP Series Cold Air Intake

  • Performance Gains: Known for its balanced design, the AIRAID MXP Series provides a noticeable boost in horsepower and torque across the RPM range.
  • Features: The intake includes a massive one-piece airbox and a premium, reusable filter. It’s also equipped with a roto-molded air intake tube that ensures smooth, uninterrupted airflow.
  • Customization: This model offers the option of oiled or dry filter types, allowing users to choose according to their preference and maintenance habits.

4. AFE Power Momentum HD Cold Air Intake System

  • Performance Gains: This high-performance intake can improve horsepower by up to 20hp and torque by up to 60 lb-ft. The intake is also known for improving turbo spool times and throttle response.
  • Features: AFE’s system includes a five-layer, progressively finer filter media for better airflow and filtration. The oversized airbox and the clear sight window allow for easy filter inspection.
  • Maintenance: The filter is designed to last for 100,000 miles before it needs servicing, making it ideal for those looking for a low-maintenance option.

5. K&N 77 Series High-Performance Air Intake

  • Performance Gains: K&N’s 77 Series promises an additional boost in horsepower and torque while enhancing throttle response.
  • Features: This intake is built with a durable, powder-coated aluminum tube that helps to cool the air further. The oversized cone filter provides excellent airflow and is washable and reusable.
  • Warranty: Backed by K&N’s famous million-mile warranty, this intake is built to last and ensures you’ll be covered for years to come.

6. Injen PowerFlow Cold Air Intake

  • Performance Gains: Injen PowerFlow is known for providing high-end power boosts, especially at higher RPMs. It can deliver up to a 10-12hp gain, making it suitable for those looking for more performance.
  • Features: Injen’s intake uses their patented MegaRam technology to optimize airflow. The intake also features a durable aluminum tube and a large cotton-gauze filter.
  • Installation: The Injen system includes all necessary hardware and clear instructions, making it an easy installation for DIYers.

7. Volant Closed Box Air Intake System

  • Performance Gains: Volant’s closed box air intake is known for improving engine performance without compromising the intake temperature. It delivers noticeable improvements in fuel economy and acceleration.
  • Features: The closed box design provides insulation from engine heat, allowing cooler air to flow to the engine. The intake system includes a PowerCore filter that provides high filtration efficiency and extended service intervals.
  • Filtration Efficiency: The PowerCore filter can capture fine particles without compromising airflow, which is ideal for Duramax engines in dusty or off-road conditions.

Choosing the Best Cold Air Intake for Your 6.6 Duramax

Here are a few tips to help you choose the right intake for your needs:

  • Consider Your Driving Conditions: If you’re frequently driving in dusty or off-road conditions, a closed box intake (like the Volant) or a high-filtration option (such as the AFE Momentum HD) might be ideal.
  • Evaluate Maintenance Needs: Some intakes, like those with oiled filters, require regular maintenance. If you’re looking for a low-maintenance option, a dry filter intake might be more suitable.
  • Look for Warranty and Durability: A long-term warranty (like K&N’s) provides peace of mind, especially if you plan on keeping your vehicle for years to come.
  • Installation Ease: Most cold air intakes come with installation guides, but if you’re not mechanically inclined, consider an intake that’s easy to install, such as the S&B Filters or Banks Ram-Air systems.

Final Thoughts

Upgrading to a high-quality cold air intake can transform your 6.6 Duramax’s performance, delivering increased horsepower, better throttle response, and improved fuel efficiency. Each of these cold air intakes has unique features and advantages, so choose one that best matches your driving habits and performance needs. Whether you’re looking for raw power, durability, or ease of maintenance, one of these top seven cold air intakes will help you get the most out of your Duramax engine.

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