K&N 77 Series Cold Air Intake

1999–2004 Jeep Grand Cherokee 4.0L I6

Part #: 77-1526KP

Overview

The K&N 77 Series Cold Air Intake is a high-performance upgrade designed specifically for the 1999 to 2004 Jeep Grand Cherokee equipped with the 4.0L inline 6-cylinder engine. This intake system replaces the factory air filter and intake tube to deliver increased airflow, resulting in noticeable gains in horsepower and torque. Ideal for Jeep enthusiasts seeking improved throttle response and engine efficiency, the 77 Series Cold Air Intake offers a reliable and long-lasting solution that enhances your vehicle’s performance without compromising durability.

Engineered to optimize air delivery, this system is perfect for drivers who want to maximize their Jeep’s potential on and off the road. The washable and reusable air filter reduces maintenance costs while providing exceptional filtration to protect your engine from harmful contaminants.

Key Features

The K&N 77 Series Cold Air Intake combines advanced engineering with durable materials to ensure superior performance and longevity. Key features include:

• Guaranteed increase in horsepower and torque for enhanced engine performance
• Mandrel-bent aluminum intake tube designed for smooth airflow and minimal restriction
• Oversized oiled cotton air filter that delivers high airflow while maintaining excellent filtration
• Washable and reusable filter media, reducing the need for frequent replacements
• Engineered to replace the factory air filter and intake tube seamlessly
• Filter cleaning interval of up to 100,000 miles under normal highway driving conditions
• Simple installation process requiring only basic hand tools
• No-Hassle Lifetime Limited Warranty for peace of mind
• Designed to maintain vehicle warranty compliance
• Street legal in all 50 U.S. states

Construction & Design

The intake system features a mandrel-bent aluminum tube that ensures smooth, unrestricted airflow to the engine. This precision bending maintains consistent diameter throughout the tube, minimizing turbulence and maximizing volumetric efficiency. The durable aluminum construction resists corrosion and heat soak, helping to maintain cooler intake air temperatures for better combustion.

The high-flow air filter is crafted from multiple layers of oiled cotton gauze, providing superior filtration while allowing increased airflow compared to standard paper filters. Its oversized design increases the surface area, enabling the engine to breathe more freely and perform at its best.

Performance & Sound

By improving airflow and reducing intake restrictions, the K&N 77 Series Cold Air Intake delivers an estimated gain of 6.7 horsepower at 4492 RPM and 7.8 lb-ft of torque. This translates to quicker throttle response and enhanced acceleration. Additionally, the system produces a subtle, aggressive induction sound that enhances the driving experience without being intrusive.

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 to directly replace the factory air filter and intake tube without requiring modifications or additional components. This ensures a hassle-free upgrade that fits perfectly on the 1999–2004 Jeep Grand Cherokee 4.0L I6 models.

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 Jeep Grand Cherokee owners who want to improve engine performance, increase horsepower and torque, and enjoy a more responsive driving experience. It suits daily drivers, off-road enthusiasts, and anyone looking to upgrade their factory intake system with a durable, high-quality solution that requires minimal maintenance.

Emissions Note

This K&N 77 Series Cold Air Intake is street legal in all 50 U.S. states and will not void your vehicle’s warranty, making it a compliant and reliable choice for performance enhancement.

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.