PERRIN PSP-ENG-112BK Lightweight Water Pump Pulley Black for 19-25 Subaru

Vehicle Fitment

• 2019-2025 Subaru Ascent (FB, 2.4L)
• 2020-2025 Subaru Forester (FA/FB, 2.5L & FA24)
• 2021-2025 Subaru Crosstrek (FB/FA24)
• 2020-2025 Subaru Outback (FB, 2.5L/XT 2.4L Turbo)
• 2020-2025 Subaru Legacy (FB, 2.5L/XT 2.4L Turbo)
• 2022-2025 Subaru WRX (VA, 2.4L Turbo)

Features

• CNC-machined lightweight water pump pulley reduces rotating mass
• Black anodized finish for corrosion resistance and stealth look
• Direct OEM replacement - no modifications required
• Improves throttle response and engine accessory efficiency
• Precision machined for accurate belt alignment and tracking
• Compatible with OEM and aftermarket belts
• Easy installation with common hand tools
• Enhances engine bay aesthetics with sleek black finish

Specifications

• Part Number: PSP-ENG-112BK
• Material: 6061-T6 billet aluminum
• Finish: Black anodized
• Weight: ~0.48 lbs (approx. 0.28 lbs lighter than OEM)
• Function: Water pump pulley to drive the water pump accessory
• Drive Type: AWD (all listed Subaru applications)

Included Components

• 1x PERRIN Lightweight Water Pump Pulley - Black
• 1x Warranty & Installation Instructions

Product Description

The PERRIN PSP-ENG-112BK Lightweight Water Pump Pulley is a performance upgrade engineered to reduce parasitic rotational mass on select Subaru Boxer engines found in models from 2019 through 2025. CNC-machined from high-quality 6061-T6 billet aluminum and finished in a durable black anodize, this pulley replaces the stock water pump pulley with a significantly lighter unit - trimming approximately 0.28 lbs from the rotating accessory assembly. The reduction in rotational mass contributes to improved throttle response and accessory efficiency while adding a stealth-inspired look to the engine bay.

This water pump pulley is designed as a direct bolt-on replacement for OEM units in a range of Subaru vehicles including the Ascent, Forester, Crosstrek, Outback, Legacy, and WRX models equipped with their respective FB, FA, and turbo variants. Installation is straightforward with common tools and requires no permanent modifications. Built to fit OEM and most aftermarket accessory belts, the PSP-ENG-112BK delivers both functional performance gains and visually appealing engine bay upgrades for enthusiast builds and daily drivers alike.