Torque Solution Lightweight Alternator Pulley (Black): Subaru EJ WRX 02-05 / STI 04-06

Crafted from a solid piece of aluminum, this lightweight alternator pulley from Torque Solution is designed to reduce rotational mass on your Subaru EJ engine. By shedding weight from the alternator, you can help free up a bit of horsepower that would otherwise be used to spin a heavier stock pulley. This can lead to a slightly improved throttle response, especially in the higher RPM range where the engine is working harder.

The black finish gives it a clean, understated look under the hood, and the direct-fit design means it bolts right up to your 2002-2005 WRX or 2004-2006 STI without any modifications. It’s a straightforward swap that can make a small but noticeable difference in how your engine feels when you get on the gas. This is a popular choice for owners looking to shave off every bit of weight and improve engine responsiveness.