PERRIN 22-25 Subaru WRX / 21-25 Crosstrek / 20-25 LGT/OBXT/FXT Lightweight Water Pump Pulley - Blue

This Perrin water pump pulley is made from a solid piece of 6061-T6 aluminum, then hard anodized blue. By reducing the rotational mass of the water pump, you'll see a small improvement in how quickly the engine revs up. It's a straightforward swap that doesn't require any special tools beyond what you'd typically use for basic engine work.

The pulley is designed to fit specific Subaru models, ensuring it bolts right up without modification. It's a well-built component that adds a touch of custom color to your engine bay while offering a functional benefit. While it won't drastically change your car's performance, it's a popular choice for those looking to shave a little weight and add some visual flair.