Perrin Lightweight Crank Pulley Subaru EJ

Your factory crank pulley is responsible for transferring energy from your crankshaft to your water pump, a/c compressor and alternator. It does this by way of a rubber belt and it does its job well. The drawback to the factory pulley is that it's quite heavy. The Perrin Lightweight Crank Pulley reduces the rotational mass of the system, allowing your engine to accelerate and decelerate the rotating assembly more quickly.

Quick Specs

• 80% Reduction in Rotating Mass - 4 lbs lighter than the OEM pulley the equivalent of removing 100lbs of vehicle weight
  
• Machined 6061 T6 Aluminum - high quality, precision construction
• Hard Anodized Finish - ensures a durable finish and resists corrosion
• Factory Fitment - direct replacement for easy installation
• Precision machined grooves, tightly sync with all OEM and aftermarket belts
• No tuning Required

Available in black, red, or blue finish. Sold individually.

Fits all EJ-motor Subarus, including 2002-2014 Subaru WRX, 2004-2021 WRX STI, 2005-2011 Legacy, 2003-2013 Forester, and more.