Torque Solution Underdrive Crank Pulley Porsche Boxster/Cayman/996/997 w/o AC (Excl Turbo Engines)

This is a Torque Solution underdrive crank pulley specifically made for your 1998-2013 Porsche 911, including Boxster, Cayman, 996, and 997 models that do not have air conditioning and are not turbo-charged engines. This part changes the speed at which your accessory belt-driven components, like the alternator and power steering pump, spin relative to the engine's crankshaft. By slowing them down slightly, it reduces the load on the engine, freeing up a small amount of horsepower and improving overall efficiency.

The pulley is constructed from well-built aluminum, making it lightweight and durable. This design choice helps to reduce rotational mass compared to the stock pulley. Torque Solution is known for making solid parts, and this underdrive pulley is designed to fit right onto your existing setup without needing major modifications. It's a popular choice for owners looking to get a little more performance out of their naturally aspirated Porsches.

When installing this, remember that slowing down your accessories means they might not perform at their absolute maximum capacity, but for most street-driven applications without AC, the trade-off for a bit more engine power is well worth it. Make sure to consult your service manual for the proper installation procedure.