Best Cold Air Intake For 6.7 Cummins

Off-Road Bandit TeamMar 18, '21

The 6.7 Cummins turbo-diesel for Ram trucks is a beast in its own right. But what if you could harness even more power while also getting better fuel economy? While you might think such an upgrade is impossible without pouring tens of thousands of dollars into your vehicle, think again.

An affordable, high-quality cold air intake is just what you need. By bringing cooler air to the air-to-fuel mixture, you add an oxygen-dense component to your engine, providing better performance and power you can feel every time you get behind the wheel.

Why Did These Cold Air Intakes Make Our List?

Not every cold air intake will provide you with the pep you want for your Cummmins 6.7 or is made by a reliable brand. So when you’re shopping for a new air intake, make sure to weigh the qualities below. By doing so, you ensure that you’re purchasing a high-quality part that will offer the results you desire.

Brand Name

Hundreds of companies produce aftermarket cold air intakes. But not every part is ideal for what you need. That said, brand name is often an integral part of choosing the right cold air intake.

This doesn’t mean you should only go with the most well-known brand at a premium price, but companies that have been in business for decades are a place to start.

Short Ram vs. Traditional Cold Air Intake

Colder, denser air has more oxygen, so when your 6.7 Cummins receives more cold air, it performs better. Traditional cold air intakes aim to maximize this by moving the air intake away from the engine. As a result, your engine performs better.

However, a short ram air intake still offers similar results through a different method. Instead of receiving more cold air, short rams (as the name implies) are shorter components that minimize air restriction to achieve the same effect.

Universal vs. Vehicle-Specific

Cold air intakes come in two fits: universal and vehicle-specific. While universal options are more affordable, you may have to do significant modifications to get the cold air intake to work in your vehicle. If you have a larger budget, a vehicle-specific choice is the better option, simply because you can pop it right into place with little effort—even if you’re a novice mechanic.

Review of the Best Cold Air Intakes For 6.7 Cummins

Cold air intakes span a wide array of styles and levels of quality, making a purchase a bit more difficult than other aftermarket accessories. However, these reviews should give you some insight into the best air intakes available for 6.7 Cummins. With a bit of research, you can find the ideal choice for your tastes and budget.

Best Overall: Banks Ram-Air System '13-18 Cummins: 42255-D


  • Short ram intake takes up less room under the hood
  • Five-year warranty
  • Quick, easy installation
  • Designed for high-performance
  • Large filter to maximize air intake


  • Some buyers report the need for modifications

What Recent Buyers Report

Overall, the Banks Ram-Air System ‘13-18 Cummins: 42255-D is a winner on all fronts. Recent buyers report better fuel economy and power numbers to go along with a deeper growl when idling or accelerating. However, others report that this part may need modification to fit within the engine compartment.

Why It Stands Out to Us

Superior performance and a five-year warranty stand out as two of the biggest perks of this aftermarket cold air intake. Throw in a simple installation for most buyers, and this part checks all the boxes.

Bottom Line

While the price may put off some budget-conscious buyers, the Banks Ram-Air System ‘13-18 Cummins: 42255-D is a true performance part that’s sure to give you the desired power numbers and increased fuel economy that lesser cold air intakes can’t provide.

Runner-up: Sinister Diesel CAI Kit: '13+ Cummins


  • Aluminum construction for improve durability and colder air
  • 100% money-back guarantee
  • Blue color to add aesthetic appeal
  • Mandrel-bent tube for perfect fit without modification
  • Long-lasting air filter


  • Air filter needs to be oiled regularly
  • Expensive compared to some other available options

What Recent Buyers Report

With its signature blue coating, buyers report that the Sinister Diesel CAI Kit provides an alluring appearance under the hood of their 6.7 Cummins turbo-diesel truck. And with mandrel-bent tubing, buyers also state that installation is quick and easy. However, the air filter needs regular oiling, which is a hassle, especially since the part doesn’t come with an oiling kit.

Why It Stands Out to Us

Sinister Diesel provides a quality product that combines aesthetics with performance in a way that few other cold air intakes can. And with a 100% money-back guarantee, you won’t have to worry if this part isn’t exactly what you wanted.

Bottom Line

When you want a bit of flash with all the perks of a cold air intake, you won’t find a better option than the Sinister Diesel CAI Kit. Those that like a hands-off approach to maintenance (don’t want to oil the filter) may want to search for a dry filter option.

Best for the Money: Airaid 301-786 Jr. Kit: '13-18 Cummins 6.7L


  • Comes with both dry and oiled filter options
  • Lifetime warranty
  • Vehicle-specific fit
  • Tested to show significant improvements in torque and horsepower
  • Bolt-on installation


  • Doesn’t come with installation instructions

What Recent Buyers Report

According to buyers, one of the greatest perks of this cold air intake is the availability of both dry and oiled filters to fit your tastes. Plus, users report a noticeable improvement in both performance and fuel economy. However, some say this product is plagued by more flimsy construction than other similarly priced products.

Why It Stands Out to Us

A limited lifetime warranty on a cold air intake is a rarity in the business. But for first-time buyers, this coupled with bolt-on installation can lessen their concerns while also achieving maximum performance.

Bottom Line

If you’re a person who wants simple installation, peace of mind, and proven results, the Airaid 301-786 Jr. Kit is sure to provide everything you need in one convenient package. However, more thrifty buyers may want to consider other options.

Editor's Pick: Airaid 300-254: '10-12 Cummins 6.7L


  • Three filter colors to match your truck’s color scheme
  • Made in the USA
  • Simple installation without the need for specialized tools
  • No-hassle lifetime warranty
  • Improved whistle on the turbo


  • Some buyers say the fit isn’t perfect
  • No improvement in fuel economy, according to some

What Recent Buyers Report

The Airaid 300-254 cold air intake system boosts power numbers and provides a drastically improved whistle that makes the 6.7 Cummins under the hood the envy of all other truck drivers. But DIY mechanics may balk at the more difficult installation than other available products.

Why It Stands Out to Us

Three filter colors and a proprietary Synthamax filter are what make this cold air intake stand out from the other options on the market. And with a lifetime warranty and improved power, drivers will know just where that extra money went.

Bottom Line

For performance enthusiasts that want to feel and hear the added boost of their cold air intake, few other options will provide what the Airaid 300-254 does. Yet those looking specifically for an improvement in fuel economy may be disappointed.

Honorable Mention: aFe Power Magnum Force Kit


  • Includes heat shield to lower air temperature
  • Uses factory mounts for easy installation
  • Five-layer gauze filter for improved performance
  • Significant increase in throttle response
  • 1.5 to 2 mpg increase recognized by users


  • Difficult to thread the air filter into place

What Recent Buyers Report

Recent buyers report that the aFe Power Magnum Force Kit is a force to be reckoned with thanks to noticeable upticks in both power and fuel economy. Plus, easy installation makes it an excellent choice for newbie mechanics or the DIYer. However, non-deleted diesel owners report that this product causes all types of dashboard lights to come, which may be a nuisance to some drivers.

Why It Stands Out to Us

With drastic improvements in fuel economy and overall performance, this cold air intake does just what it’s supposed to. It also comes with a two-year warranty and an affordable price, providing a one-two punch of affordability and comfort of the mind.

Bottom Line

At a more affordable price than most cold air intakes and with many of the same features, the aFe Power Magnum Force Kit is beyond reproach for many 6.7 Cummins owners. And while it may have some minor complications, it’s still an excellent value buy.

Are All Cold Air Intakes The Same?

For the most part, cold air intakes are relatively similar. As mentioned above, one of the most drastic differences is whether you choose a traditional cold air intake or a short ram intake. While a cold air intake uses colder, denser air to improve the air-to-fuel mixture, a short ram intake limits restrictions as much as possible. Both have similar effects on your 6.7 Cummins performance.

However, cold air intakes can also vary based on a number of other ideas. The construction materials (plastic, metal, fiberglass, etc.) can have an impact on performance, as well as the placement of the actual air intake (fender-mount vs. under the hood). And finally, some cold air intakes also add a heat shield between the intake and the engine to prevent heat soak.

Perks of Getting a New Cold Air Intake

While popping the hood and showing your new cold air intake for your 6.7 Cummins turbo-diesel definitely has head-turning appeal, this aftermarket part also has several other perks. So if you want more than just aesthetic appeal, you’ll get it with a cold air intake.

Improved Power Numbers

When that extra oxygen-rich cold air mixes with fuel and fires, you’ll know just why you purchased a cold air intake. With the fuel burning/firing more efficiently, you’ll notice a marked improvement in both torque and horsepower. How much will it improve? That depends on the part. But you should feel the difference when accelerating and in both spirited and everyday driving.

Better Fuel Economy

Because the fuel burns more efficiently, your engine is always getting the right blend of air and fuel. This translates to improved fuel economy due to more effective engine firing. And while this boost in mileage may be only 0.5 or 1 mpg, just think of how much that will add up over the life of your truck.

Saving Money on Filters

Cold air intakes typically have a rounded filter that’s also reusable. With proper maintenance and cleaning, that means that these can last anywhere from 30,000 to 50,000 miles. Regular disposable filters usually only last about 10,000 to 15,000 miles, meaning that you’ll get three times the life of your filter, saving you time and money.

Don’t Be Full of Hot Air; Get a Cold Air Intake for Your 6.7 Cummins

With everything a cold air intake for your 6.7 Cummins has to offer, buying one isn’t just about your own personal preference. It’s about squeezing every last pony and lb-ft of torque out of your engine. So if you truly want excellent performance, don’t be full of hot air. Put a cold air intake into place, and you’ll never regret the decision you made.

People Also Ask

Despite the relatively simplistic operation of a cold air intake, many potential buyers may still have some questions. So whether you’re purchasing a cold air intake for your 6.7 Cummins for the first time or the fifth time, here are some questions that people also ask to help alleviate your concerns.

Does A Cold Air Intake Help A Diesel?

This is debatable among many Cummins and other truck enthusiasts. For everyday driving, some say that the cold air intake is unnecessary for a diesel. The only way that a cold air intake becomes helpful is if you put your truck to the test regularly through towing, hauling, or rough driving. Still, a cold air intake may help improve performance and fuel economy for everyday drivers.

Can You Have A Cold Air Intake And A Turbo?

In short, yes. The interesting part is that a turbo naturally heats up the air. This doesn’t mean that a cold air intake is a pointless addition. But it may have less of an effect on a turbo than on a vehicle without a turbo.