K&N 77 Series Cold Air Intake

Ram 1500 13 5.7L Hemi

Part #: 77-1571KP

Overview

The K&N 77 Series Cold Air Intake is a high-performance upgrade designed specifically for the 2011–2018 Ram 1500 equipped with the 4.7L V8 engine. This intake system replaces the factory air filter and intake tube to deliver increased airflow, resulting in a guaranteed boost in horsepower and torque. Ideal for Ram 1500 owners looking to enhance engine efficiency and throttle response, the 77 Series combines durable construction with advanced filtration technology to improve overall engine performance while maintaining reliable protection.

With a focus on long-term use and ease of maintenance, this cold air intake system features a washable and reusable high-flow air filter that requires cleaning only every 100,000 miles under normal highway driving conditions. It is engineered to provide exceptional filtration without sacrificing airflow, making it a smart upgrade for daily drivers and enthusiasts alike.

Key Features

The K&N 77 Series Cold Air Intake offers a range of features designed to maximize performance and durability:

• Guaranteed increase in horsepower and torque for improved engine output
• Mandrel-bent aluminum intake tube for smooth airflow and enhanced durability
• Oversized oiled cotton air filter engineered for high airflow and superior filtration
• Washable and reusable filter media, reducing replacement costs over time
• Replaces factory air filter and intake tube for a direct fit upgrade
• Filter cleaning interval up to 100,000 miles under normal highway conditions
• Simple installation process requiring only basic hand tools
• No-Hassle Lifetime Limited Warranty from K&N Engineering
• Designed to maintain vehicle warranty compliance

Construction & Design

The intake system features a mandrel-bent aluminum tube, which ensures smooth, unrestricted airflow by minimizing turbulence and pressure drops. Aluminum construction not only provides strength and corrosion resistance but also helps dissipate heat, keeping intake air temperatures lower for better combustion efficiency. The oversized air filter uses oiled cotton gauze media, which is carefully layered to trap contaminants while allowing maximum airflow. This combination of materials and engineering results in a durable, high-quality intake system built to withstand the rigors of daily driving and performance use.

Performance & Sound

By increasing the volume and quality of air entering the engine, the K&N 77 Series Cold Air Intake delivers an estimated horsepower gain of 10.14 HP at 5436 RPM and an estimated torque increase of 9.5 lb-ft. This translates to improved throttle response and enhanced engine efficiency. Additionally, the intake system produces a subtle, aggressive induction sound that enhances the driving experience without being overpowering.

Installation & Fitment

Installation of the K&N 77 Series Cold Air Intake is straightforward and can typically be completed in 60 minutes or less using simple hand tools. The system is designed as a direct replacement for the factory air intake components, requiring no permanent modifications or cutting. This ensures a hassle-free upgrade that maintains the integrity of the vehicle’s original setup. The intake fits all 2011 through 2018 Ram 1500 models equipped with the 4.7L V8 engine.

What's Included

• Mandrel-bent aluminum intake tube
• Oversized washable and reusable oiled cotton air filter
• All necessary mounting hardware and clamps
• Detailed installation instructions

Ideal For

This cold air intake system is ideal for Ram 1500 owners seeking a reliable and effective performance upgrade that enhances horsepower, torque, and throttle response. It suits daily drivers, weekend enthusiasts, and those who want a durable, low-maintenance air intake solution that improves engine breathing without compromising factory warranty or requiring complex installation.

Emissions Note

This product is not legal for sale or use in California due to state emissions regulations.

K&N is one of the most recognized names in performance filtration, offering reusable high-flow air filters, cold air intakes, and related filters for street and motorsports use. Their products are designed to improve airflow and serviceability—ideal for enthusiasts who want performance-oriented filtration and easy maintenance.