PERRIN Lightweight Alternator Pulley Red - Fits 06-14 Subaru WRX / 07-21 STI / 06-13 Forester subaru-crosstrek-2018 Constant supply of fresh air

Constant supply of fresh air during driving helps to decrease intake temperature

Torque Solution Phenolic Thermal Intake Spacers

FULL Battery Management System (BMS) including Over-Discharge

Ground-up formulation blended for THE BOSS™ Foam Cannon Auto-Mix system

without a significant increase in boost pressure

PERRIN Lightweight Alternator Pulley Red - Fits 06-14 Subaru WRX / 07-21 STI / 06-13 Forester subaru-crosstrek-2018 Constant supply of fresh airThe PERRIN Lightweight Alternator Pulley in red is engineered for 2006 2014 Subaru WRX, 2007 2021 STI, and 2006 2013 Forester models. By reducing rotational mass, this pulley enhances engine responsiveness and efficiency, contributing to improved throttle response and potential power gains. Crafted with precision and durability in mind, it offers a reliable upgrade for enthusiasts seeking optimized performance without compromising reliability.