GReddy Duralumin Alternator/Water Pump Pulley Set

2013–2021 Subaru BRZ / Scion FR-S / Toyota 86 2.0L Boxer Engine

Part #: 13512112

Overview

The GReddy Duralumin Alternator and Water Pump Pulley Set is a high-performance upgrade designed specifically for enthusiasts seeking to enhance their Subaru BRZ, Scion FR-S, or Toyota 86. Crafted from premium billet Duralumin, these pulleys offer a perfect blend of strength, lightweight construction, and corrosion resistance. Whether you're aiming to improve engine responsiveness, reduce accessory drive weight, or simply add a stylish touch to your engine bay, this pulley set is an excellent choice.

Designed for street and spirited driving, this pulley set helps support your vehicle’s performance by reducing rotational mass and ensuring more efficient accessory operation. The anodized blue finish not only provides a striking appearance but also offers excellent corrosion resistance, maintaining its look over time. Installation is straightforward, making it suitable for DIY enthusiasts and professional mechanics alike.

Key Features

The GReddy Duralumin Pulley Set boasts several key features that make it a valuable upgrade for your vehicle:

• Constructed from high-quality billet Duralumin, an alloy primarily composed of aluminum and copper, offering exceptional strength-to-weight ratio.
• Lightweight design reduces rotational inertia, which can contribute to quicker engine response and potentially improved acceleration.
• Anodized blue finish enhances corrosion resistance and adds a distinctive, sporty look to your engine bay.
• Precision-machined for perfect fitment on the alternator and water pump, ensuring reliable operation and easy installation.
• Designed to withstand the rigors of daily driving and spirited use, maintaining durability over time.
• Compatible with the factory accessory belt system, requiring no modifications for installation.
• Helps support a more efficient accessory drive system, which can contribute to overall engine performance.
• Ideal for enthusiasts looking to reduce weight and improve engine responsiveness without sacrificing reliability.

Construction & Design

The pulleys are meticulously CNC-machined from billet Duralumin, a lightweight yet durable alloy known for its excellent thermal and corrosion resistance. The anodized blue coating not only provides a sleek aesthetic but also protects against oxidation and corrosion, ensuring long-lasting performance and appearance. The precise machining process guarantees a perfect fit on the factory pulleys, eliminating any vibration or slippage issues. The lightweight construction reduces the load on your engine’s accessory belt system, which can lead to smoother operation and potentially longer belt life.

Installation & Fitment

The GReddy Duralumin Pulley Set is designed as a direct bolt-on upgrade for the factory alternator and water pump pulleys on 2013–2021 Subaru BRZ, Scion FR-S, and Toyota 86 models equipped with the 2.0L boxer engine. No cutting, drilling, or complex modifications are required. Basic hand tools and a standard socket set are sufficient for installation. It is recommended to follow the manufacturer’s instructions carefully to ensure proper alignment and tension of the accessory belt. The installation process typically takes less than an hour.

• Direct bolt-on replacement for factory pulleys
• No modifications or special tools required
• Suitable for DIY installation or professional service

What's Included

• Billet Duralumin alternator pulley
• Billet Duralumin water pump pulley
• Installation hardware and instructions

Ideal For

• Performance enthusiasts seeking to reduce accessory drive weight
• Owners looking to improve engine responsiveness and throttle feel
• Those wanting a durable, corrosion-resistant upgrade for daily driving or spirited use
• DIYers and professional mechanics aiming for a reliable, stylish pulley upgrade