Perrin Performance Lightweight Water Pump Pulley

Part #: PSP-ENG-111RD

Overview

The Perrin Lightweight Water Pump Pulley is a high-performance upgrade designed for Subaru WRX models from 2015 to 2021. Crafted to reduce rotational mass, this pulley helps improve engine response and efficiency by decreasing the load on the water pump and accessory drive system. Made from durable materials, it offers a reliable and lightweight alternative to the stock component, supporting your vehicle’s performance and longevity. Whether you're a daily driver or a spirited enthusiast, this pulley enhances your engine's responsiveness while maintaining durability under demanding conditions. This component is ideal for those looking to optimize their engine's rotational inertia, resulting in quicker throttle response and smoother operation. Its sleek red finish adds a sporty aesthetic to your engine bay, complementing other performance upgrades and custom builds.

Key Features

This lightweight water pump pulley features a precision-machined aluminum construction designed to reduce weight without sacrificing strength. Its lightweight design helps decrease parasitic drag on the engine, supporting faster acceleration and improved throttle response. The pulley’s anodized red finish not only provides corrosion resistance but also adds a bold visual accent to your engine bay. Engineered for a direct bolt-on installation, it fits seamlessly with OEM water pump assemblies, ensuring a straightforward upgrade process. The durable construction ensures long-lasting performance, even under high-temperature conditions typical in spirited driving.

Construction & Design

The pulley is made from high-quality aluminum, CNC-machined for precise fitment and smooth operation. Its lightweight design is achieved through careful material selection and manufacturing processes, reducing rotational mass while maintaining structural integrity. The anodized red coating provides additional corrosion resistance and aesthetic appeal, making it a durable and attractive upgrade.

Driving Feel & Feedback

By reducing the rotational inertia of the water pump, this pulley helps improve engine responsiveness and throttle feel. Drivers may notice quicker acceleration and a more immediate engine response, especially during high-rev situations or spirited driving.

Installation & Fitment

Designed as a direct bolt-on replacement, this pulley requires no additional modifications or special tools for installation. It is compatible with 2015-2021 Subaru WRX models and should be verified for fitment with your specific vehicle before installation.

What’s Included

The package includes the lightweight water pump pulley and all necessary hardware for installation, ensuring a complete upgrade experience.