K&N NextGen Cold Air Intake for RAM 1500 5.7L V8 (2019–2026) — HDPE Tube, High-Flow Cotton Filter

The K&N NextGen Cold Air Intake System (50-1578) replaces your RAM 1500's restrictive factory intake with a large-diameter HDPE tube, oversized washable cotton filter, and a NextGen airbox to deliver more airflow, measurable horsepower and torque gains, and long service intervals without requiring a tune.

This bolt-on intake is engineered specifically for 2019–2026 RAM 1500 trucks equipped with the 5.7L V8 (F/I). It uses a rotationally molded HDPE intake tube and a radius-entry, oiled cotton High-Flow LIFETIME Air Filter™ to increase airflow volume and velocity while the hybrid NextGen airbox reduces inlet air temperature and shields the filter from engine-heat and debris. K&N dyno testing shows notable peak gains on the stock engine calibration, and the washable filter can go up to 100,000 miles between cleanings in normal highway use.

How much performance improvement does this intake provide?

When fitted to the specified RAM 1500 5.7L V8, the NextGen kit is dyno-proven to raise airflow by roughly 36.5% and delivers around a 19.9 hp and 19.9 lb-ft torque increase on the vehicle's stock tune. Gains will vary slightly with altitude, fuel, and accessory loads, but the design provides consistent performance improvements without additional engine calibration.

• Measured ~36.51% increase in airflow volume
• Approximately +19.94 horsepower and +19.93 lb-ft torque on stock tune
• No ECU retune required for the advertised gains
• Maintains smooth cruising with no added drone

What components make the NextGen system more effective than stock?

The kit combines a large-diameter, CAD-designed intake tube with strategically placed air channels, an oversized conical oiled cotton filter, and a NextGen hybrid airbox that increases fresh-air intake while isolating the filter from hot engine bay air. Each piece is made to precise tolerances for improved airflow dynamics and a factory-integrated appearance under the hood.

• Rotationally molded HDPE tube for increased airflow volume and durability
• Oversized oiled cotton High-Flow LIFETIME Air Filter™ with radius-entry design
• NextGen hybrid airbox enlarges the fresh-air inlet and reduces inlet temperatures
• Precision fitment for a clean, factory-style installation

How often do I need to service the filter and what maintenance is required?

The oiled cotton filter is washable and reusable, designed to be cleaned and re-oiled rather than replaced. Under normal highway driving conditions the oversized filter can typically go up to 100,000 miles before service is recommended, though driving in dusty or off-road conditions shortens that interval.

• Wash and re-oil following K&N’s filter-care instructions
• Up to 100,000 miles between services in typical highway use
• Inspect more frequently after dusty or off-road driving
• Reusable lifetime filter lowers long-term filter costs

How difficult is installation and will it affect warranty or emissions?

The system is designed for straightforward installation and most owners can complete the swap in under an hour using common hand tools. Because it is engineered to fit factory mounting points and the gains are achieved without requiring a tune, K&N intakes are generally intended to be compatible with vehicle warranty and emissions systems; check local regulations and your vehicle warranty terms for specifics.

• Typical install time: under 60 minutes with basic tools
• Uses factory-style mounting points and hardware for secure fit
• No mandatory ECU tune required to gain performance
• Confirm local emissions rules and warranty policies before installation

Who is this for: The K&N NextGen Cold Air Intake 50-1578 is aimed at RAM 1500 owners (2019–2026) who want measurable, dyno-proven power and torque gains without altering their engine tune, plus the convenience of a long-life washable filter and a factory-like appearance under the hood. It suits daily drivers seeking stronger acceleration and improved engine sound, weekend enthusiasts who appreciate easy DIY installation, and owners who prefer a reusable filter to reduce long-term maintenance costs.