ARP Studs

2011–2025 Subaru Forester / Subaru Impreza / Subaru WRX 7/16" Alternator Stud Kit

Part #: 300-0501

Overview

The ARP Studs (300-0501) are high-performance replacement fasteners designed specifically for mounting aftermarket alternator brackets on Subaru vehicles from 2011 to 2025. Crafted by ARP, a renowned name in racing fasteners, these studs provide a reliable and durable solution for enthusiasts seeking to upgrade their engine bay components. Whether you're building a street-driven project or preparing for competitive racing, these studs ensure a secure and precise fit for your alternator assembly.

Constructed with performance in mind, these alternator studs are engineered to withstand the rigors of high-stress environments. They are ideal for automotive enthusiasts who demand strength, reliability, and consistent performance from their hardware. By replacing factory fasteners with ARP's premium studs, you'll benefit from improved durability and peace of mind during spirited driving or competition use.

Key Features

ARP Studs (300-0501) incorporate several advanced features that set them apart from standard hardware. These features include:

• Material and Construction: Made from chromoly steel, these studs offer exceptional tensile strength of 200,000 psi, ensuring they won't bend or break under stress.
• Finish: The black oxide coating provides corrosion resistance and a sleek appearance, helping to protect the studs from rust and environmental damage.
• Design: Precision-machined with a 12-point head style, these studs facilitate easy installation and removal with compatible tools, ensuring a secure fit every time.
• Thread Size and Length: The 7/16 in.-20 thread size is standard for many alternator mounting points, with available lengths of 5.000 inches and 5.250 inches to accommodate various setups.
• Included Components: Each kit includes a high-strength 12-point nut and a flat washer, ensuring complete installation hardware for a secure and stable connection.
• Application: Designed specifically for mounting aftermarket alternator brackets, these studs are compatible with a wide range of Subaru models within the specified years.
• Performance and Reliability: Engineered to maintain integrity under high vibration and stress conditions, these studs help support consistent electrical and mechanical performance.

Construction & Design

The ARP alternator studs are meticulously manufactured from high-grade chromoly steel, known for its superior strength-to-weight ratio and durability. The studs feature a one-piece design that eliminates weak points common in multi-piece fasteners, providing enhanced reliability during demanding driving conditions. The black oxide finish not only adds corrosion resistance but also reduces glare and enhances the aesthetic appeal of your engine bay.

Precision machining ensures a perfect fit with OEM and aftermarket components, reducing installation time and minimizing the risk of cross-threading or damage. The 12-point head design allows for easier wrench access in tight engine compartments, making installation straightforward even in confined spaces. These studs are engineered to withstand the torque and stress associated with high-performance applications, ensuring your alternator remains securely mounted under all driving conditions.

Installation & Fitment

The ARP Alternator Stud Kit (300-0501) is a bolt-on upgrade that requires no cutting or drilling. Simply replace your factory fasteners with these high-strength studs, using standard hand tools. The included 12-point nut and flat washer ensure a secure and stable connection. Due to their precise dimensions and high-quality materials, installation is quick and straightforward, making them suitable for both DIY enthusiasts and professional mechanics.

• Easy to install with common hand tools
• No modifications or special tuning required
• Designed to fit Subaru models from 2011 to 2025 with aftermarket alternator brackets

What's Included

• High-strength chromoly steel alternator stud (7/16 in.-20 thread, available in 5.000 in. or 5.250 in. lengths)
• 12-point nut
• Flat washer

Ideal For

• Performance enthusiasts upgrading their Subaru engine bay
• Racers seeking durable, high-tensile fasteners for high-stress applications
• DIY mechanics replacing worn or damaged factory alternator studs
• Anyone looking for a reliable, high-quality mounting solution for aftermarket alternator brackets