aFe MAGNUM FLOW Pro Dry S Panel Air Filter

Multiple Subaru Fitments 2011–2025 Subaru Forester, Impreza, WRX, and More 2.0L Turbo / 2.5L Engines

Part #: 31-10161

Overview

The aFe MAGNUM FLOW Pro Dry S Panel Air Filter is designed to enhance the airflow of your Subaru's intake system, providing a significant upgrade over the stock paper filter. Crafted with performance in mind, this oil-free, high-flow filter is an excellent choice for Subaru enthusiasts seeking improved horsepower, torque, and overall engine response. Whether you're a daily driver, spirited enthusiast, or involved in light off-road adventures, this filter helps your vehicle breathe easier, supporting optimal engine performance and efficiency.

Constructed with durability and ease of maintenance in mind, the Pro Dry S filter offers a washable and reusable design, allowing you to clean and reuse it multiple times without sacrificing filtration quality. Its open pleated design maximizes dust holding capacity, ensuring long service intervals and reliable protection for your engine. With its OE replacement form factor, installation is straightforward, making it a perfect upgrade for Subaru owners looking to boost their vehicle's intake performance without complex modifications.

Key Features

The aFe MAGNUM FLOW Pro Dry S Panel Air Filter incorporates advanced materials and thoughtful design features to deliver superior airflow and filtration:

• Constructed with 100% polyurethane on all four sides, providing excellent durability and resistance to heat and engine bay conditions.
• Three layers of progressively finer mesh synthetic media optimize airflow while capturing dust and debris effectively, ensuring maximum filtration efficiency.
• Oil-free design eliminates the mess and maintenance associated with oiled filters, simplifying cleaning and reinstallation.
• Open pleats increase surface area, offering higher dust holding capacity and longer service life between cleanings.
• Washable and reusable, enabling multiple cleaning cycles to save money and reduce waste.
• Designed as an OE replacement, ensuring perfect fitment and compatibility with multiple Subaru models and years.
• Improves horsepower and torque output by reducing airflow restrictions compared to factory paper filters.
• Supports enhanced throttle response and engine efficiency, making it ideal for daily driving and performance upgrades.
• Manufactured with high-quality synthetic media that resists moisture and contaminants, maintaining performance over time.

Filter Options

The Pro Dry S media is ideal for drivers seeking a maintenance-free, oil-free filter that offers excellent airflow and filtration. Its synthetic layers are engineered for easy cleaning with soap and water, making it a cost-effective and environmentally friendly choice. This filter is best suited for street use, spirited driving, and light off-road conditions where consistent performance and low maintenance are desired.

Construction & Design

The aFe MAGNUM FLOW Pro Dry S Panel Air Filter features a robust construction with a one-piece polyurethane housing that ensures a precise fit and long-lasting durability. The open pleated design maximizes surface area, allowing for increased dust capacity and airflow. The synthetic media is engineered with multiple layers to provide a balance of filtration and high flow, helping your engine breathe more freely. Its oil-free design means it won't clog or require oiling, simplifying maintenance and reducing the risk of oil contamination in your intake system.

Installation & Fitment

The aFe MAGNUM FLOW Pro Dry S Panel Air Filter is designed as a direct OE replacement, ensuring a simple bolt-on installation. No cutting, drilling, or tuning is required, making it accessible for DIY enthusiasts and professional installers alike. The filter fits multiple Subaru models from 2011 to 2025, including Forester, Impreza, WRX, and others with compatible intake configurations. Its precise dimensions and construction ensure a secure fit and reliable performance.

• Easy to install with basic hand tools
• No modifications or tuning needed
• Designed to fit OE air boxes and intake systems

What's Included

• Pro Dry S Panel Air Filter with synthetic media
• Complete filter assembly ready for installation
• Instruction sheet (if applicable)

Ideal For

• Subaru owners seeking improved airflow and engine response
• Performance enthusiasts looking for a washable, reusable filter
• Daily drivers and spirited drivers alike
• Anyone wanting a maintenance-friendly upgrade over stock filters