K&N Engineering Custom Filter Oval

2010–2025, Universal Fit for Most Vehicles, Oval Shape, 6.125in Length, 4.5in Width, 1.75in Height

Part #: E-3321

Overview

The K&N Engineering Custom Filter Oval is a high-performance replacement air filter designed to enhance your vehicle's airflow and overall engine efficiency. Crafted by K&N Engineering, a trusted leader in filtration technology, this oval-shaped filter is engineered to support increased horsepower and acceleration, making it an excellent choice for enthusiasts seeking improved engine response and performance. Whether you're upgrading your daily driver or optimizing your vehicle for spirited driving, this filter provides a simple yet effective way to boost your vehicle's capabilities.

Designed for versatility, the K&N Custom Filter Oval fits into a wide range of vehicles with factory or custom air boxes. Its drop-in design ensures a straightforward installation process—simply remove your existing disposable filter and replace it with this washable, reusable unit. This means no complicated modifications or tuning are necessary, allowing you to enjoy immediate performance benefits with minimal effort. The durable construction and high-quality materials ensure long-lasting performance and reliable filtration, helping to protect your engine from dirt and debris while supporting optimal airflow.

Key Features

The K&N Engineering Custom Filter Oval offers a range of features that make it a top choice for performance-minded vehicle owners:

• Constructed with high-quality, washable, and reusable cotton gauze media for excellent filtration and increased airflow compared to standard paper filters.
• Oval shape with dimensions of 6.125 inches in length, 4.5 inches in width, and 1.75 inches in height, designed to fit into a variety of custom and factory air intake systems.
• Drop-in replacement that easily installs into existing air boxes without the need for modifications or additional parts.
• Supports improved horsepower and acceleration by increasing the volume of air entering the engine, which can enhance throttle response and overall engine performance.
• Manufactured with durable, high-quality materials that withstand repeated cleaning and service, providing long-term value and performance.
• Backed by K&N's renowned reputation for quality and performance in the automotive industry.
• Designed to fit a broad range of vehicles, making it a versatile upgrade for many makes and models.
• Meets or exceeds OEM standards for filtration efficiency, ensuring your engine remains protected from harmful contaminants.

Filter Options

This filter features a high-flow cotton gauze media that is washable and reusable, allowing for multiple cleaning and re-oiling cycles. Its design eliminates the need for disposable filters, reducing waste and ongoing replacement costs. The filter's open-cell structure promotes maximum airflow while maintaining excellent filtration capabilities, making it suitable for both street and performance applications.

Construction & Design

The K&N Custom Filter Oval is built with a durable, epoxy-coated aluminum wire mesh that provides structural integrity and resistance to corrosion. The high-quality cotton gauze media is layered with multiple pleats to maximize surface area, ensuring efficient filtration and airflow. The oval shape is precisely engineered to fit into a variety of custom intake setups, and the filter's rubber flange provides a secure seal to prevent unfiltered air from bypassing the filter element. This combination of materials and design features ensures a long-lasting, reliable performance that supports your vehicle's power and efficiency goals.

Installation & Fitment

The K&N Engineering Custom Filter Oval is designed for easy installation. It is a direct drop-in replacement that fits into your existing factory or custom air box without the need for modifications. No cutting, drilling, or tuning is required, making it an ideal upgrade for DIY enthusiasts and professional installers alike. Simply remove your current filter and insert this washable unit for an immediate performance boost.

• Easy, bolt-on installation with no additional parts required
• Fits a wide range of vehicles with oval-shaped air intake openings
• No tuning or modifications needed

What's Included

• One K&N Engineering Custom Filter Oval (6.125in L x 4.5in W x 1.75in H)
• Reinforced rubber flange for a secure fit
• Instruction sheet for proper cleaning and maintenance

Ideal For

• Performance enthusiasts seeking increased horsepower and acceleration
• Daily drivers looking for reliable, long-lasting filtration
• Owners of custom or factory air intake systems requiring oval-shaped filters
• Anyone interested in washable and reusable air filters to reduce ongoing costs