ARP Studs

2011–2025 Subaru Forester / Subaru Impreza / Subaru WRX 5/16" Air Cleaner Stud Kit

Part #: 400-0301

Overview

The ARP Studs (400-0301) are high-quality air cleaner stud kits designed to enhance your vehicle's intake system. Crafted by ARP, a trusted name in performance fasteners, these studs allow you to upgrade your air filter assembly by accommodating larger filters, thereby increasing airflow to your engine. Whether you're a daily driver seeking improved efficiency or a performance enthusiast aiming for better throttle response, these studs provide a reliable solution to optimize your intake setup.

Constructed from premium materials, the ARP air cleaner studs are built for durability and long-lasting performance. They help you achieve a more efficient air intake, supporting your engine's power and responsiveness. Easy to install, these studs are perfect for those looking to improve their vehicle's airflow without extensive modifications.

Key Features

ARP Studs (400-0301) are engineered with precision and quality to meet the demands of performance applications. Key features include:

• Manufactured from high-grade stainless steel, ensuring corrosion resistance and strength for long-term use.
• Polished finish provides a sleek, professional appearance and additional corrosion protection.
• Designed with a 5/16 in.-18 and 5/16 in.-24 thread size, compatible with a wide range of air cleaner assemblies.
• Includes a durable hex nut for secure fastening, ensuring the stud stays in place during demanding driving conditions.
• Stud length of approximately 2.23 inches allows for accommodating larger air filters, increasing airflow capacity.
• Simple bolt-on installation requires no additional modifications, making it accessible for DIY enthusiasts and professionals alike.
• Helps improve engine breathing, which can support increased horsepower and torque when combined with other performance upgrades.
• Designed specifically for Subaru models from 2011 to 2025, including Forester, Impreza, and WRX, among others.

Construction & Design

The ARP air cleaner studs are meticulously crafted from stainless steel, providing excellent strength and resistance to corrosion. The polished finish not only enhances the aesthetic appeal but also offers additional protection against the elements. The studs feature a precise thread pitch of 5/16 in.-18 and 5/16 in.-24, ensuring compatibility with a variety of air filter assemblies. Their length of 2.23 inches is optimized to allow for larger filters, which can significantly improve airflow and engine breathing. The design emphasizes durability and ease of installation, making these studs a reliable upgrade for your vehicle's intake system.

Installation & Fitment

The ARP air cleaner studs are designed for straightforward bolt-on installation. They replace the factory studs in your air filter assembly, providing a secure and stable mounting point for larger filters. No cutting, drilling, or tuning is required, making this a hassle-free upgrade. Simply remove the existing studs and replace them with the ARP studs, tightening the included nuts to secure the assembly. This upgrade is suitable for DIY enthusiasts and professional installers alike, offering a quick way to enhance your vehicle's intake system.

• Easy, bolt-on installation with standard tools
• No modifications or tuning necessary
• Compatible with Subaru models from 2011 to 2025, including Forester, Impreza, and WRX

What's Included

• ARP Air Cleaner Stud Kit (400-0301) with stainless steel studs
• Polished finish for corrosion resistance and aesthetic appeal
• Hex nuts for secure fastening

Ideal For

• Performance enthusiasts seeking to upgrade their air intake system
• DIY mechanics looking for durable, high-quality hardware
• Subaru owners from 2011 to 2025 aiming to support larger air filters and improved airflow
• Anyone wanting a reliable, long-lasting solution to enhance engine breathing