Fits 2015-2020 Subaru WRX STI (Base, Launch Edition, Limited, and Series.HyperBlue).

The PERRIN Pulley Cover replaces your factory plastic accessory cover with a more durable and aesthetically pleasing solution. This black-finished component not only protects your alternator and power steering belts from external debris but also cleans up the engine bay by providing a sleek, professional look. Constructed for a precision fit, it bolts directly to the factory mounting points, ensuring a secure installation that maintains its finish even in high-heat environments.

• Precision-engineered to replace the OEM plastic pulley cover
• Durable black finish complements your engine bay styling
• Direct bolt-on installation using factory hardware points
• Engineered specifically for the EJ-series engine in the STI
• Manufacturer Part Number: PSP-ENG-152BK

Fits 2002-2014 Subaru Impreza WRX and WRX STI (including Limited, Premium, TR, and Special Edition models).

The PERRIN Pulley Cover (PSP-ENG-150RD) provides a striking aesthetic upgrade for your Subaru's engine bay, replacing the lackluster factory plastic shroud with a performance-oriented design. This cover adds a clean, custom look while shielding the alternator and belt assembly from debris. Engineered for a precise, direct-fit installation, it bolts onto existing factory mounting points for a secure and straightforward setup.

• Vibrant red finish for enhanced engine bay styling
• Direct replacement for the OEM plastic pulley cover
• Precision-engineered for 2002-2014 WRX and STI chassis
• Maintains protection for the alternator and belt system
• Manufacturer Part Number: PSP-ENG-150RD

Vehicle Fitment:

• 2002-2014 Subaru Impreza WRX
• 2006-2007, 2010-2014 Subaru Impreza WRX Limited
• 2009-2014 Subaru Impreza WRX Premium
• 2004-2014 Subaru Impreza WRX STI
• 2007, 2011-2014 Subaru Impreza WRX STI Limited
• 2010 Subaru Impreza WRX STI Special Edition
• 2006-2007 Subaru Impreza WRX TR

Fits select 2002-2021 Subaru WRX and STI, and 2008-2011 Impreza models.

The PERRIN Pulley Cover (PSP-ENG-150NY) provides a vibrant aesthetic upgrade to your Subaru engine bay while shielding the alternator and accessory belts. Constructed for a precise fit, this cover replaces the factory plastic unit with a durable metal alternative finished in a high-visibility Neon Yellow powder coat that resists heat and corrosion.

• Direct bolt-on installation utilizing factory mounting points
• Durable metal construction with a vibrant Neon Yellow finish
• Laser-etched PERRIN logo for a clean, professional look
• Protects belts and pulleys from debris while enhancing engine bay styling
• Includes all necessary hardware for a complete installation
• Manufacturer Part Number: PSP-ENG-150NY

Fits select 2002-2014 Subaru WRX, 2004-2021 STI, and 2008-2011 Impreza models.

The PERRIN Pulley Cover adds a custom, finished look to your Subaru's engine bay while providing essential shielding for the alternator and accessory belts. This component replaces the often-brittle factory plastic cover with a durable, precision-engineered aluminum piece. Manufactured from 5052 plate aluminum, it is designed to withstand high engine bay temperatures without warping or fading, while the Hyper Pink powder-coated finish ensures a bold, high-contrast aesthetic that stands out.

• CNC laser-cut 5052 plate aluminum for a precise fit over factory mounting points.
• Durable Hyper Pink powder coat finish for superior corrosion resistance and style.
• Angled design provides additional rigidity and a modern engine bay profile.
• Straightforward installation using included hardware or existing factory points.
• Manufacturer Part Number: PSP-ENG-150HP

Fits select 2008-2011 Subaru Impreza (2.5i / Outback Sport).

Enhance the aesthetics and protection of your engine bay with the PERRIN Pulley Cover. This component is designed to replace or supplement factory shrouding, providing a cleaner, more professional look while shielding the accessory belts. The black finish offers a stealthy appearance that integrates seamlessly with your vehicle's engine compartment.

Built for a precise fit, this cover utilizes factory mounting points to ensure a secure, vibration-free installation. It is an ideal upgrade for owners looking to tidy up the factory belt layout with a durable, high-quality solution from a trusted name in Subaru performance.

• Specifically fits 2008-2011 Subaru Impreza 2.5i and Outback Sport models
• Finish: Black
• Installation: Bolts to factory mounting points
• Manufacturer Part Number: PSP-ENG-150BK

Fits 2022-2026 Subaru BRZ and Toyota GR86.

The PERRIN Lightweight Alternator Pulley (PSP-ENG-122RD) is designed to replace the heavy factory component, reducing rotational mass on the engine's accessory drive. By lowering the inertia of the rotating assembly, this pulley allows the engine to rev more freely, resulting in improved throttle response and decreased parasitic load.

This pulley is precision-machined for a perfect fit, ensuring proper belt alignment and tension on the 2022-2026 BRZ and GR86 platforms. The vibrant red finish provides a custom look under the hood while offering protection against the elements.

• Direct replacement for the factory alternator pulley
• Reduces rotational mass for improved throttle response
• Precision machined for optimal balance and belt tracking
• Anodized red finish for durability and style
• Manufacturer Part Number: PSP-ENG-122RD

Fits 2015-2026 Subaru WRX, 2015-2022 Crosstrek, and 2014-2018 Forester XT (FXT).

The PERRIN Lightweight Alternator Pulley is designed to reduce rotational mass on your engine's rotating assembly. By replacing the heavy factory steel pulley with this precision-engineered lightweight alternative, you decrease parasitic drag, which results in noticeably quicker throttle response and faster revving through the powerband.

• Direct replacement for the factory alternator pulley
• Reduces rotational mass for improved engine response
• Precision lightweight construction
• Vibrant Red finish for enhanced engine bay aesthetics
• Manufacturer Part Number: PSP-ENG-121RD

Fits 2015-2026 Subaru WRX, 2015-2022 Subaru Crosstrek, and 2014-2018 Subaru Forester XT.

The PERRIN Lightweight Alternator Pulley is designed to reduce rotational mass and parasitic drag on your Subaru engine. By replacing the heavy factory steel pulley with this CNC-machined aluminum component, you decrease the effort required for the engine to spin the alternator, resulting in noticeably faster throttle response and improved engine acceleration across the powerband. Weighing significantly less than the OEM counterpart, it provides a functional performance upgrade without compromising charging system reliability.

• Direct replacement for the factory alternator pulley
• Reduces rotational mass for improved throttle response
• CNC-machined from 6061-T6 aluminum
• Corrosion-resistant black anodized finish
• Precision balanced for vibration-free operation
• Manufacturer Part Number: PSP-ENG-121BK

Fits select 2006-2021 Subaru WRX, STI, and Forester models.

The PERRIN Lightweight Alternator Pulley (PSP-ENG-119RD) is engineered to reduce rotational mass on your engine's accessory drive. By replacing the heavy factory steel pulley with a precision-machined aluminum component, you decrease parasitic drag on the crankshaft, resulting in improved throttle response and faster engine revving.

• Precision CNC machined from 6061 aluminum for significant weight savings over the OEM unit
• Anodized red finish provides long-lasting corrosion resistance and a custom engine bay aesthetic
• Designed to maintain the factory diameter to ensure consistent alternator charging and proper belt tension
• Direct bolt-on installation using factory hardware
• Manufacturer Part Number: PSP-ENG-119RD

Fits select 2006-2021 Subaru WRX, STI, and Forester models.

The PERRIN Lightweight Alternator Pulley is engineered to reduce rotational mass on your engine's accessory drive. By replacing the heavy factory steel pulley with this precision-machined lightweight version, you decrease the energy required to spin the alternator, which translates into quicker throttle response and faster engine revving. Beyond the performance benefits, the vibrant blue finish provides a clean, custom look to your engine bay.

• Direct replacement for the factory alternator pulley
• Reduces rotational mass for improved engine response
• Precision machined for a perfect fit on the alternator shaft
• Durable blue anodized finish for long-lasting corrosion resistance
• Manufacturer Part Number: PSP-ENG-119BL

The PERRIN Lightweight Alternator Pulley is engineered to reduce the rotating mass of your engine's assembly. By replacing the heavy factory steel pulley with this lightweight version, you decrease parasitic drag on the drivetrain, resulting in faster throttle response and improved engine acceleration.

• Reduces rotational mass for improved engine response
• Durable black finish for long-lasting corrosion resistance
• Direct replacement for the OEM alternator pulley
• Manufacturer Part Number: PSP-ENG-119BK

Fits 2006-2014 Subaru WRX, 2007-2021 Subaru WRX STI, and 2006-2013 Subaru Forester.

Fits select 1993-2011 Subaru Impreza, WRX, and STI models. The PERRIN Lightweight Alternator Pulley is designed to reduce rotational mass on the engine's crank, allowing for faster revving and improved throttle response by lowering the moment of inertia. This component replaces the heavy factory steel pulley with a precision-engineered alternative that maintains standard charging system speeds.

• Precision CNC machined from 6061-T6 billet aluminum
• Red anodized finish for maximum corrosion resistance and engine bay aesthetics
• Significantly lighter than the OEM steel pulley to reduce parasitic drag
• Direct bolt-on installation using factory mounting hardware
• Manufacturer Part Number: PSP-ENG-118RD

Fits 1993-2011 Subaru Impreza, 2002-2005 WRX, and 2004-2006 STI.

The PERRIN Lightweight Alternator Pulley is designed to reduce rotational mass and improve throttle response by replacing the heavy factory steel pulley. By decreasing the parasitic drag on the engine, this pulley allows your Subaru boxer engine to rev more freely, providing a more connected driving experience without affecting charging system performance.

• Direct replacement for the factory alternator pulley
• Decreases rotational inertia for improved engine response
• Precision CNC-machined from 6061-T6 aluminum
• Corrosion-resistant black anodized finish
• Manufacturer Part Number: PSP-ENG-118BK

Fits select 2020-2026 Subaru WRX, Crosstrek, Legacy, Outback, and Forester models.

The PERRIN Lightweight Water Pump Pulley is engineered to reduce rotational mass on the engine's accessory drive. By replacing the heavy factory steel pulley with a precision-machined aluminum alternative, your engine can rev more freely, improving throttle response. This component is a direct replacement for the original equipment, maintaining factory belt alignment and diameter to ensure consistent cooling system performance.

• CNC machined from lightweight aluminum for reduced rotational inertia
• Red anodized finish for long-lasting corrosion resistance and engine bay aesthetics
• Reduces parasitic drag to help improve engine response
• Direct bolt-on installation requires no modifications
• Manufacturer Part Number: PSP-ENG-112RD

Fits select 2020-2026 Subaru WRX, Crosstrek, Legacy, Outback, and Forester models.

The PERRIN Lightweight Water Pump Pulley (PSP-ENG-112BL) is engineered to reduce rotational mass on your engine's accessory drive. By replacing the heavy factory steel pulley with a precision-machined lightweight component, you decrease parasitic drag, allowing the engine to rev more freely and improving throttle response.

This pulley is a direct bolt-on replacement that maintains factory belt alignment and diameter, ensuring reliable operation of your cooling system. The vibrant blue anodized finish provides a durable, corrosion-resistant surface that adds a custom look to your engine bay.

• Reduces rotational mass for improved engine response
• Precision machined for perfect balance and fitment
• Direct replacement for the OEM water pump pulley
• Vibrant blue anodized finish for long-lasting aesthetics
• Manufacturer Part Number: PSP-ENG-112BL

Fits select 2020-2026 Subaru WRX, Crosstrek, Legacy (LGT), Outback (OBXT), and Forester (FXT) models.

The PERRIN Lightweight Water Pump Pulley (PSP-ENG-112BK) is designed to replace the heavy factory steel unit, significantly reducing rotational mass on the engine's accessory drive. By decreasing the parasitic load, this pulley allows the engine to rev more freely and improves throttle response without altering the water pump's speed or cooling efficiency. It is a direct bolt-on upgrade that maintains factory belt alignment and tensioner operation.

• Replaces heavy OEM pulley to reduce rotational mass
• Improves engine responsiveness and throttle feel
• Precision-machined for perfect balance and fitment
• Corrosion-resistant black finish
• Direct replacement for the factory water pump pulley
• Manufacturer Part Number: PSP-ENG-112BK

The PERRIN Lightweight Water Pump Pulley is designed to reduce rotational mass on your engine's accessory drive, fitting select 2014-2021 Subaru WRX, Crosstrek, and Forester XT models. By replacing the heavy factory pulley with this precision-engineered lightweight version, you can improve throttle response and allow the engine to rev more freely by reducing parasitic drag on the water pump.

This pulley serves as a direct bolt-on replacement for the OEM unit, maintaining factory belt alignment and tension. The blue finish provides a custom aesthetic upgrade to the engine bay while maintaining the reliability required for daily driving or performance use.

• Direct replacement for factory water pump pulley
• Reduces rotational mass for improved engine response
• Lightweight precision-engineered construction
• Finish: Blue
• Manufacturer Part Number: PSP-ENG-111BL

Fits 2014-2018 Subaru Forester XT, 2015-2021 WRX, and 2018-2020 Crosstrek.

The PERRIN Lightweight Water Pump Pulley is engineered to reduce rotational mass on the engine's crank, facilitating faster throttle response and quicker revving. By replacing the heavy factory steel pulley with this precision-machined aluminum component, you significantly decrease parasitic drag on the cooling system. This is a simple, effective bolt-on upgrade for enthusiasts looking to optimize engine efficiency and performance without sacrificing reliability.

• Lightweight design reduces reciprocating mass for improved throttle response
• Precision CNC-machined from high-strength aluminum
• Corrosion-resistant black finish for long-term durability
• Direct OEM replacement requiring no modifications for installation
• Manufacturer Part Number: PSP-ENG-111BK

Fits select 2022-2026 Subaru WRX/BRZ and Toyota GR86, and 2020-2025 Subaru Forester XT and Outback XT models.

The PERRIN Lightweight Crank Pulley reduces rotational mass to improve throttle response and allow your engine to reach its powerband more quickly. By replacing the heavy factory pulley with a precision-machined alternative, you reduce the parasitic drag on the crankshaft without affecting engine balance. This is a direct bolt-on upgrade that maintains factory belt alignment and provides a noticeable improvement in rev speed during spirited driving and downshifts.

• CNC machined from 6061-T6 aluminum for strength and weight reduction
• Red anodized finish for corrosion resistance and engine bay aesthetics
• Reduces rotational mass for improved throttle response
• Precision balanced to ensure smooth engine operation
• Manufacturer Part Number: PSP-ENG-106RD

Fits select 2020-2025 Subaru Forester XT/Outback XT, 2022-2026 Subaru WRX/BRZ, and 2022-2026 Toyota GR86.

The PERRIN Lightweight Crank Pulley (PSP-ENG-106BL) is engineered to enhance engine performance by significantly reducing rotational mass on the crankshaft. By replacing the heavy factory cast-iron pulley with a precision-machined aluminum alternative, you reduce parasitic drag, allowing the engine to rev faster and improving overall throttle response.

Crafted from 6061-T6 aluminum and finished in a durable blue anodized coating, this pulley is built to withstand the rigors of high-performance driving while providing a custom look under the hood. It maintains the factory diameter, ensuring that your alternator, power steering, and air conditioning continue to operate within OEM specifications.

• Manufacturer Part Number: PSP-ENG-106BL
• Construction: CNC-machined 6061-T6 Aluminum
• Finish: Blue Anodized for corrosion resistance
• Improves throttle response and engine acceleration
• Direct replacement for the heavy OEM crank pulley

Fits 2020-2026 Subaru WRX, BRZ, Forester XT, and Outback XT, and 2022-2026 Toyota GR86.

The PERRIN Lightweight Crank Pulley is engineered to improve throttle response and engine efficiency by significantly reducing rotational mass on the crankshaft. By replacing the heavy factory unit with this precision-machined component, your engine can rev more freely, offering a noticeable difference during acceleration and downshifts.

• Precision CNC-machined from 6061-T6 aluminum for high strength and minimal weight
• Black anodized finish provides a durable, corrosion-resistant surface
• Reduces parasitic drag on the engine for improved revving capability
• Direct bolt-on replacement for the factory harmonic balancer
• Manufacturer Part Number: PSP-ENG-106BK

Fits select 2015-2021 Subaru WRX, Forester, and Legacy models. The PERRIN Lightweight Crank Pulley (PSP-ENG-104RD) is engineered to reduce rotational inertia by replacing the heavy factory crank pulley. This reduction in parasitic mass allows the engine to rev more freely, resulting in noticeably improved throttle response and faster acceleration throughout the RPM range.

• Direct replacement for the heavy OEM crankshaft pulley
• Reduces rotating mass for improved engine response and acceleration
• Precision-machined construction for exact fitment and balance
• Red anodized finish for long-term corrosion resistance and engine bay aesthetics
• Manufacturer Part Number: PSP-ENG-104RD

The PERRIN Lightweight Crank Pulley (PSP-ENG-104BL) improves engine response and throttle sensitivity by significantly reducing rotational mass on the crankshaft. Fits select 2015-2021 Subaru WRX, Forester, and Legacy models.

By replacing the heavy OEM steel pulley with a lightweight aluminum version, you reduce the parasitic drag on the engine, allowing it to rev more freely throughout the RPM range. This pulley is designed to maintain the same diameter as the factory unit, ensuring that accessory belt speeds and alternator output remain within original specifications.

• Precision CNC-machined from 6061-T6 aluminum
• Reduces rotational mass for improved throttle response
• Anodized blue finish for superior corrosion resistance and engine bay aesthetics
• Direct replacement for the factory crank pulley using original hardware
• Manufacturer Part Number: PSP-ENG-104BL

Fits select 2012-2020 Subaru Impreza and Toyota 86.

The PERRIN Lightened Crank Pulley (PSP-ENG-101RD) is engineered to improve throttle response and engine performance by reducing rotational mass on the crankshaft. By replacing the heavy factory pulley with this precision-machined component, your engine can accelerate through the RPM range with less resistance. This direct replacement part maintains factory belt alignment while offering a cleaner look and sharper engine feedback.

• Improved Response: Decreases parasitic drag on the rotating assembly for faster engine acceleration.
• Precision Machining: CNC machined for perfect balance and vibration-free operation.
• Durable Finish: Features a vibrant red anodized coating for superior corrosion resistance and engine bay aesthetics.
• Direct Fit: Designed to bolt directly to the factory mounting points without modification.
• Manufacturer Part Number: PSP-ENG-101RD

Fits 2013-2020 Subaru BRZ, 2015-2018 WRX, 2014-2018 Forester XT, and 2013-2016 Crosstrek models.

The PERRIN Lightened Crank Pulley is engineered to improve throttle response and engine performance by significantly reducing rotational mass on the crankshaft. By replacing the heavy factory steel pulley with a lightweight aluminum alternative, you reduce the parasitic load, allowing the engine to rev more freely and reach its powerband faster.

Each pulley is precision CNC machined from 6061-T6 aluminum, offering a substantial weight saving over the OEM unit without sacrificing structural integrity. The blue anodized finish provides a durable, corrosion-resistant surface that stands up to harsh engine bay conditions. This is a direct bolt-on replacement that works with factory belt sizes and requires no additional tuning or modifications.

• Reduces rotational mass for improved throttle response and faster acceleration
• Precision CNC machined from 6061-T6 aluminum
• Corrosion-resistant Blue anodized finish
• Direct bolt-on replacement for the factory crank pulley
• Weight: Significantly lighter than OEM steel pulley
• Manufacturer Part Number: PSP-ENG-101BL

Fits select 2012-2014 Subaru Impreza (including WRX and STI) and 2017-2020 Toyota 86.

The PERRIN Lightened Crank Pulley is engineered to improve throttle response and acceleration by reducing rotational mass on the crankshaft. By replacing the heavy factory component with this precision-machined lightweight pulley, you reduce the effort required for the engine to rev, resulting in a more connected driving experience. It is designed as a direct bolt-on replacement, maintaining factory belt alignment while offering a cleaner, more technical look under the hood.

• Manufacturer Part Number: PSP-ENG-101BK
• Finish: Black Anodized
• Reduces rotating mass for improved engine acceleration
• Precision-machined for perfect balance and fitment
• Direct replacement for the OEM crank pulley

Fits select 1993-2021 Subaru Impreza, WRX, STI, and 1994-2009 Legacy.

The PERRIN Lightened Crank Pulley is designed to reduce rotational mass on the crankshaft, allowing the engine to rev more freely and significantly improving throttle response. By replacing the heavy factory pulley with this precision-machined alternative, you reduce the effort required for the rotating assembly to spin, leading to a more responsive and engaging driving experience without compromising long-term reliability.

• Precision machined for optimal balance and fitment
• Red finish provides a custom look and superior corrosion resistance
• Significant reduction in rotational mass compared to OEM pulleys
• Direct bolt-on replacement for the factory crank pulley
• Manufacturer Part Number: PSP-ENG-100RD

Fits Subaru Impreza 1993-2014 (including 2002-2014 WRX) and Subaru WRX STI 2004-2021.

The PERRIN Lightened Crank Pulley (PSP-ENG-100BL) is engineered to enhance engine response by reducing rotational mass on the crankshaft. By replacing the heavy factory steel pulley with a precision-machined aluminum alternative, the engine encounters less parasitic drag, allowing it to rev faster and improve throttle sensitivity across the entire RPM range.

• CNC machined from 6061-T6 aluminum for superior strength and weight reduction
• Anodized blue finish provides excellent corrosion resistance and a custom engine bay aesthetic
• Features precision laser-etched timing marks for accurate engine tuning and maintenance
• Direct bolt-on installation replaces the OEM crank pulley with no modifications required
• Manufacturer Part Number: PSP-ENG-100BL

Fits 2002-2014 Subaru Impreza WRX models including Limited, Premium, and TR variants.

The PERRIN Lightened Crank Pulley is designed to reduce rotational mass on the crankshaft, decreasing parasitic drag and allowing the engine to rev more freely. By replacing the heavy factory unit with this precision-machined aluminum pulley, drivers will experience sharper throttle response and improved acceleration throughout the RPM range. This pulley maintains the OEM diameter, ensuring that belt alignment and accessory speeds remain within factory specifications.

• Reduces rotational mass for faster throttle response
• Precision CNC machined from lightweight aluminum
• Corrosion-resistant black finish
• Direct bolt-on replacement for the factory unit
• Maintains factory belt alignment and accessory speeds
• Manufacturer Part Number: PSP-ENG-100BK

Fits 2015-2021 Subaru WRX & STI, 2012-2025 Impreza, and 2024-2025 Crosstrek.

The PERRIN Rear Differential Lockdown System (PSP-DRV-536) is engineered to eliminate excessive movement in the rear differential, creating a more direct connection between the drivetrain and the chassis. By securing the differential mount, this system significantly reduces drivetrain slop and the common "thud" experienced during hard shifts or aggressive launches, leading to more immediate power delivery and sharper throttle response.

• Increases drivetrain rigidity for improved handling and power transfer
• Reduces unwanted rear differential movement and drivetrain lash
• Enhances throttle feel and gear-shift precision under load
• Constructed for long-term durability in high-performance applications
• Designed as a bolt-on solution for simplified installation
• Manufacturer Part Number: PSP-DRV-536