HOA 3-Port Boost Control Solenoid STI_2004-2007 Water pumps have an indicator

Water pumps have an indicator that tells you when they are going bad

*If you have a 2002-2005 Subaru WRX

Street and light track use

Ball link design

(1) M12 Socket set cup

HOA 3-Port Boost Control Solenoid STI_2004-2007 Water pumps have an indicatorPart #: HOA BCS This 3 Port Boost Control Solenoid, made in Germany, is a direct replacement on Subaru, Mitsubishi and other turbo vehicles and it does not place additional load on the ECU electronics. Unlike the factory solenoid, this 3 Port Solenoid allows you to raise the factory boost levels with more response and adding more control. With this solenoid no boost pressure is allowed through to the actuator so no premature boost can occur. The 3