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More Power for 2019 RAM 1500 5.7L V8s with K&N Cold Air Intakes

The 77-1578KP cold air intake system after installation

Designed to be compatible with 2019 RAM 1500 5.7L V8 models, the K&N® 63-1578 and 77-1578KP cold air intake systems offer a guaranteed increase in horsepower and torque for RAM 1500s.

The 2019 RAM 1500 has been completely redesigned for the 2019 model year—with tons of high-tech upgrades and the option of a zesty 5.7-liter V8, rated at 395 horsepower and 410 lb.-ft. of torque. If you’re a power-minded driver—and if you’re driving a RAM 1500 V8, we’re guessing you are—you may be interested in the estimated torque increase of 34.6 lb.-ft.* that the 77-1578KP kit provides (along with a guaranteed increase in horsepower), or the estimated increase of 10.7 horsepower* that the 63-1578 offered during testing. Read on for details on both systems.


K&N® performance air intake systems come with a horsepower guarantee. During dynamometer testing, the 63-1578 provided an estimated power increase of 10.7-horsepower and 15.5 lb./ft. of torque*, and the 77-1578KPprovided an estimated power increase of 15.1-horsepower and 34.6 lb./ft. of torque*. Follow the links below to view the complete dynamometer charts.

63-1578 dynamometer chart

77-1578KP dynamometer chart

“Awesome product. Bolted right up no issues. Immediate difference in throttle response. Would highly recommend.” – Justin from Canada [Part No. 77-2588KTK]


Both the K&N® 63-1578 and 77-1578KP intake systems are designed to provide outstanding engine protection paired with a guaranteed increase in power. With two options to choose from, you can select the system that fits your performance and appearance preferences.

An aerodynamic HDPE intake tube helps keep engine air cooler


The K&N® 63-1578 air intake system includes a free-flowing roto-molded HDPE intake tube and oversized conical air filter designed to replace the factory air filter and air intake components. The included intake tube is engineered to be aerodynamic, and an oiled High-Flow Air Filter™ (also included in the kit) helps increase airflow to your engine—while simultaneously providing exceptional protection from contaminants. The oversized filter shape allows for up to 100,000 miles between cleanings (under normal highway driving conditions). When it does need to be cleaned, you can use the K&N Recharger® Kit (99-5000 or 99-5050) to quickly and easily restore your filter’s performance. Each intake and filter is designed to last for the life of your vehicle.


The K&N® 77-1578KP air intake system is a free-flowing, mandrel-bent polished aluminum tube cold air intake system designed to replace the factory air filter and air intake components. The included polished aluminum intake tube is engineered to be aerodynamic, and the washable High-Flow™ Air Filter (also included in the kit) also helps increase airflow to your engine—up to 50% more airflow than a typical disposable paper air filter.

A heat shield helps protect the filter from high engine bay temperatures

“Ram 1500, 5.7L, installed recently, exactly what I was looking for. Quicker acceleration and sounds great. Reminds me of a 383 magnum from my teens. Well done K&N.” – Jack from Canada [Part No. 77-1561KP]


Since engine combustion is most efficient in an oxygen-rich environment, keeping engine air cooler often significantly increases engine combustion efficiency. Each K&N® intake system features a free-flowing, aerodynamic intake tube which is engineered to reduce turbulence in the air and helps keep engine air cooler. The 63-1578 system features a roto-molded high-density polyethylene (HDPE) intake tube, and the 77-1578KP features a mandrel-bent polished aluminum intake tube. Each system also incorporates a steel heat shield, which helps protect the air filter and intake air from high temperatures within the engine bay.

“Easy to follow instructions. Organized parts. Superior result. Very happy and ready to see what’s other K&N upgrades are available for my Ram.” – Robert from Georgia [Part No. 63-1561]


Factory intake systems often feature intake tubing with tight bends, baffles, and other obstacles that can slow airflow, create turbulence, and muffle engine noise—unlike K&N® intake systems, which are designed to give your engine a more satisfying growl on acceleration, but return to quiet once at speed.


The 63-1578 and 77-1578KP intake systems are all designed to help keep engine air cooler, which can increase engine combustion efficiency and help provide a smooth, low-restriction path for airflow to the engine. Your engine needs oxygen to create power; the cylinders in your vehicle’s engine need to have air to create the explosion that produces horsepower and torque. Since cold air contains more oxygen molecules than warm air, injecting a higher volume of oxygen-rich air into the cylinders allows the engine to burn fuel more efficiently during combustion—providing an increase in power.

In a typical stock air intake system, air has to pass through a thick, disposable paper filter, and then move through a narrow system of tubing that can cause air to swirl and become turbulent. Excess turbulence causes the molecules within the air to collide, creating heat, which lowers the density of the air and reduces the efficiency of combustion. All K&N® intake systems are specifically engineered to help keep your engine air cooler.

Very impressed with the increased power and responsiveness.” – Spencer from Texas [Part No. 77-9039KP]


Maintaining the proper air-to-fuel ratio (AFR) is critical for engine performance, and relates to the amount of air versus the amount of fuel used by an engine for combustion. A correct, stoichiometrically balanced AFR produces combustion with perfect efficiency, excluding other factors. For gasoline engines, the theoretically perfect chemical ratio is 14.7:1—14.7 parts air to one part fuel. In effect, this means that an engine requires almost fifteen times more air than fuel for efficient combustion—which emphasizes the importance of providing a high volume of air through an intake system.


The K&N® 63-1578 and 77-1578KP intake systems are each engineered to incorporate factory mounting points and the factory mass air sensor. Installation can typically be completed in 90 minutes or less, and requires only simple hand tools. Detailed instructions are included in your kit, and installation instruction videos are available on our website for many applications.

The 63-1578 is engineered to fit:

  • 2019 Ram 1500 5.7L V8 Fuel Injection
  • 2019 Dodge 1500 5.7L V8 Fuel Injection

The 77-1578KP is engineered to fit:

  • 2019 Ram 1500 5.7L V8 Fuel Injection
  • 2019 Dodge 1500 5.7L V8 Fuel Injection


Each intake system comes with a 10-Year/Million Mile Limited Warranty. Furthermore, using a K&N replacement air intake system will not void your factory warranty; in the U.S., manufacturers must provide evidence that an aftermarket part is the cause of a necessary repair in order to void or deny warranty coverage. The Consumer Products Warranty Act of 1975 (also known as the Magnuson-Moss Warranty Act) protects consumers’ rights to their warranty coverage.

“Easy install and instant performance upgrade.” – Nick from Michigan [Part No. 77-1567KS]

To purchase the 63-1578 or 77-1578KP intake systems, please visit their individual product pages—or visit the vehicle search page to explore air intake system options for your vehicle. Join the millions of customers who trust K&N to help them boost performance and protection in their vehicles!

Legal in 49 states. Not legal for sale or use in California on any pollution controlled motor vehicle.

*Horsepower gains vary among products and applications, but each K&N performance air intake system is designed to increase airflow efficiency for specific vehicles and their engines. Each kit undergoes significant testing to help ensure that the filter and intake tube are engineered to deliver large increases in airflow and horsepower. Please visit individual product pages to view horsepower estimates for your specific vehicle.


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