ARP Studs

2011–2025 Subaru Forester / Subaru Impreza / Subaru WRX 1/4" x 2.443 Air Cleaner Stud Kit

Part #: 400-0307

Overview

The ARP Studs (400-0307) are high-quality air cleaner stud kits designed to enhance your vehicle's intake system. Crafted by ARP, a renowned 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, a performance enthusiast, or involved in spirited driving, these studs help support improved engine breathing and potentially better power output.

Made from premium materials, these ARP air cleaner studs are built for durability and long-lasting performance. They are an excellent upgrade for Subaru models from 2011 to 2025, including the Forester, Impreza, and WRX, ensuring a reliable fitment and enhanced airflow capacity. Installing these studs can help you achieve a more efficient air intake setup, contributing to improved throttle response and engine performance.

Key Features

ARP air cleaner studs are engineered with precision and quality in mind, offering several benefits for your vehicle's intake system:

• Constructed from stainless steel with a polished finish, these studs provide excellent corrosion resistance and a sleek appearance.
• The 1/4-inch thread size ensures compatibility with a wide range of air filter assemblies and intake components.
• Each kit includes a durable stud and a matching hex nut, simplifying installation and ensuring a secure fit.
• The 2.44-inch length of the stud allows for accommodating larger air filters, increasing the volume of air entering your engine.
• Designed to help you gain more air for your engine, supporting potential increases in horsepower and torque.
• Top-quality materials and precise manufacturing standards ensure a long service life and reliable performance under demanding conditions.
• Easy to install with standard tools, these studs are a straightforward upgrade for your existing intake setup.
• Perfect for enthusiasts looking to optimize their vehicle's airflow and overall performance without extensive modifications.
• Ideal for use in street, spirited driving, or mild performance applications where improved air intake is desired.

Construction & Design

The ARP air cleaner studs are crafted from high-grade stainless steel, ensuring strength, durability, and corrosion resistance. The polished finish not only enhances the aesthetic appeal but also provides additional protection against rust and environmental wear. The studs feature a precise 1/4-inch thread, compatible with most air filter assemblies, and are designed with a length of 2.44 inches to accommodate larger filters for increased airflow.

The design emphasizes ease of installation, with a standard hex nut included for secure fastening. The one-piece construction and high-quality materials ensure a consistent fit and reliable performance over time. These studs are manufactured to ARP's strict standards, guaranteeing a long-lasting upgrade that maintains its integrity even under high-performance conditions.

Installation & Fitment

The ARP air cleaner studs are designed for a straightforward bolt-on installation. They replace the factory studs in your air filter assembly, providing a secure mounting point for larger filters. No cutting, drilling, or complex modifications are required. Simply remove the existing studs and replace them with these upgraded ARP studs using standard hand tools. The included nuts ensure a tight, vibration-resistant fit, making this a quick and effective upgrade for your vehicle's intake system.

• Easy bolt-on installation with basic hand tools
• No cutting or drilling required
• Compatible with most Subaru air filter assemblies from 2011 to 2025

What's Included

• One stainless steel air cleaner stud (1/4" x 2.44")
• One matching hex nut

Ideal For

• Performance enthusiasts seeking to upgrade their air intake system
• Subaru owners looking to support larger air filters for increased airflow
• DIY mechanics wanting a simple, reliable upgrade
• Anyone aiming to improve throttle response and engine breathing