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Perrin Alternator Pulley: Subaru BRZ 2022+ & Toyota GR86 2022+

Perrin Alternator Pulley: Subaru BRZ 2022+ & Toyota GR86 2022+

The Perrin Alternator Pulley reduces rotational mass to improve throttle response, horsepower, and torque for 2022+ Subaru BRZ and Toyota GR86 models. Crafted from lightweight 6061 T6 billet aluminum, it eliminates common OEM pulley failures that cause belt wear and charging issues. Precision-machined grooves ensure a secure belt fit, enhancing reliability and engine bay aesthetics. This durable pulley is available in multiple finishes to match your build while supporting long-term performance.
Part # PSP-ENG-122BK

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The Perrin Alternator Pulley reduces rotational mass to improve throttle response, horsepower, and torque for 2022+ Subaru BRZ and Toyota GR86 models. Crafted from lightweight 6061 T6 billet aluminum, it eliminates common OEM pulley failures that cause belt wear and charging issues. Precision-machined grooves ensure a secure belt fit, enhancing reliability and engine bay aesthetics. This durable pulley is available in multiple finishes to match your build while supporting long-term performance.

Perrin Alternator Pulley

2022+ Subaru BRZ & Toyota GR86

PSP-ENG-122BK / PSP-ENG-122BL / PSP-ENG-122RD

Overview:

The Perrin Alternator Pulley is a precision-engineered upgrade designed specifically for the 2022 and newer Subaru BRZ and Toyota GR86 models. This pulley replaces the OEM clutch-style alternator pulley, which is known to fail over time, causing issues such as knocking noises, battery charging problems, and premature belt wear. By eliminating this failure point, the Perrin Alternator Pulley enhances reliability while also reducing rotational mass for improved engine response.

Ideal for enthusiasts seeking a durable, lightweight component that also adds a clean, performance-oriented look to their engine bay, this pulley offers a straightforward installation and compatibility with both OEM and aftermarket belts. It’s a practical upgrade that supports better throttle response, horsepower, and torque without compromising daily drivability.

Key Features:

Engineered for performance and reliability, the Perrin Alternator Pulley offers the following benefits:

  • Constructed from high-quality 6061 T6 billet aluminum for strength and durability
  • Available in three anodized finishes: black, blue, and red to match your engine bay style
  • Weighs just 0.20 lbs, significantly lighter than the OEM pulley to reduce rotational mass
  • Precision machined grooves ensure tight synchronization with OEM and aftermarket belts
  • Eliminates the OEM clutch-style pulley failure point, preventing knocking noises and belt issues
  • Improves throttle response, horsepower, and torque through reduced parasitic drag
  • Designed to complement the Perrin Crank Pulley for a cohesive performance upgrade
  • Laser etched for enhanced belt life and a precision fit

Construction & Design:

The Perrin Alternator Pulley is crafted from premium 6061 T6 billet aluminum, a material known for its excellent strength-to-weight ratio and resistance to corrosion. The pulley undergoes a meticulous CNC machining process to achieve precise dimensions and groove profiles that perfectly match OEM and aftermarket belts. Its anodized finish not only adds visual appeal but also provides a durable protective coating that resists wear and environmental damage.

Designed with both aesthetics and function in mind, the pulley’s lightweight construction reduces rotational inertia, allowing the engine to rev more freely and respond quicker to throttle inputs. The laser etching ensures consistent belt grip and longevity, contributing to overall drivetrain reliability.

Performance & Sound

By replacing the heavier OEM clutch-style alternator pulley with a lightweight, solid pulley, the Perrin Alternator Pulley reduces parasitic drag on the engine. This reduction in rotational mass translates to improved throttle response and a modest increase in horsepower and torque. Additionally, the removal of the failing clutch mechanism eliminates associated knocking noises, resulting in a smoother and quieter engine operation.

Installation & Fitment:

Installation of the Perrin Alternator Pulley is straightforward and designed to be a direct replacement for the OEM pulley on 2022 and newer Subaru BRZ and Toyota GR86 models. No modifications to the alternator or belt routing are required. The pulley comes with a flange nut for secure mounting, and detailed installation instructions are included to guide you through the process. This upgrade is suitable for enthusiasts of all skill levels looking to enhance reliability and performance.

What's Included:

  • 1 x Perrin Alternator Pulley
  • 1 x Flange Nut
  • Installation Instructions

Ideal For:

This alternator pulley is perfect for Subaru BRZ and Toyota GR86 owners who want to prevent common OEM pulley failures while gaining a lightweight, durable upgrade that improves engine responsiveness. It is especially suited for enthusiasts who have or plan to install other performance components such as the Perrin Crank Pulley, or those seeking a reliable, maintenance-free pulley solution for daily driving and spirited driving alike.

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Part #: PSP-ENG-122BK
Brand: Perrin Performance
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Perrin Alternator Pulley reduces rotational mass to improve throttle response, horsepower, and torque for 2022+ Subaru BRZ and Toyota GR86 models. Crafted from lightweight 6061 T6 billet aluminum, it eliminates common OEM pulley failures that cause belt wear and charging issues. Precision-machined grooves ensure a secure belt fit, enhancing reliability and engine bay aesthetics. This durable pulley is available in multiple finishes to match your build while supporting long-term performance."}