K&N Engineering Performance Intake Kit

2003–2004 Lincoln Navigator V8-5.4L DOHC

Part #: 57-2551

Overview

The K&N Engineering Performance Intake Kit is designed to enhance the airflow and overall performance of your Lincoln Navigator equipped with the 5.4L DOHC V8 engine from 2003 to 2004. This high-quality intake system is engineered for enthusiasts seeking improved throttle response, increased horsepower, and a more aggressive engine sound. Whether you're looking to boost your vehicle's daily driving capabilities or add a touch of performance for spirited driving, this intake kit offers a reliable and effective upgrade.

Built with precision and durability in mind, the K&N intake kit helps your engine breathe better by replacing the restrictive factory air intake system. As a result, you'll experience smoother acceleration, improved fuel efficiency, and enhanced engine sound, all while maintaining the reliability and longevity expected from K&N products.

Key Features

The K&N Performance Intake Kit features a combination of advanced materials and innovative design to optimize airflow and durability:

• High-flow, reusable cotton-gain air filter with a durable rubber frame, designed for long service intervals and easy cleaning.
• Mandrel-bent aluminum intake tube that ensures smooth, unrestricted airflow from the filter to the engine.
• Precision-engineered housing that shields the filter from engine heat, helping to maintain cooler intake air temperatures.
• Easy bolt-on installation with no cutting or drilling required, utilizing factory mounting points for a perfect fit.
• Enhanced engine sound that provides a more aggressive intake tone without excessive noise.
• Improved airflow compared to the factory intake, supporting increased horsepower and torque.
• Designed specifically for the 2003–2004 Lincoln Navigator V8-5.4L DOHC engine, ensuring optimal fitment and performance.

Construction & Design

The K&N intake system is constructed with high-quality, durable materials to withstand the rigors of daily driving and off-road conditions. The intake tube is made from mandrel-bent aluminum, which provides a smooth internal surface to minimize airflow turbulence and maximize efficiency. The high-flow cotton-gain filter is washable and reusable, offering a cost-effective and environmentally friendly alternative to disposable filters. The filter is housed within a custom-designed, heat-shielding enclosure that helps prevent hot engine air from entering the intake, ensuring consistent performance and cooler intake temperatures. The entire assembly is engineered for a direct, bolt-on installation, making it accessible for DIY enthusiasts and professional installers alike.

Installation & Fitment

The K&N Performance Intake Kit is designed for a straightforward, bolt-on installation. It utilizes the factory mounting points and requires no cutting, drilling, or additional modifications. The process typically involves removing the stock air intake components and replacing them with the K&N system, which can be completed with basic hand tools. The kit includes all necessary hardware and instructions, allowing you to upgrade your vehicle quickly and easily at home or in a professional shop.

What's Included

• High-flow cotton-gain reusable air filter
• Mandrel-bent aluminum intake tube
• Custom heat-shielding housing
• All necessary clamps, couplers, and hardware
• Installation instructions

Ideal For

• Lincoln Navigator owners seeking improved engine performance and sound
• Performance enthusiasts looking for a reliable, reusable intake upgrade
• DIYers interested in a straightforward bolt-on modification
• Drivers wanting to support increased horsepower and throttle response