GrimmSpeed 160 Degree Thermostat for 02-11 Subaru WRX/STI. It's no secret that excess heat kills engines and chokes power. This is exactly why you need a Grimmspeed 160_ thermostat for your high performance Subaru. The Grimmspeed thermostat will have a direct and dramatic effect on your engine, lowering operating temperatures in excess of 30_. OEM thermostats can actually seal closed if a failure occurs, leaving your engine even more susceptible to the Big Bada-Boom! The Grimmspeed thermostat is specially designed that if it does fail, it will lock open, flowing extra coolant into the block until the car can be safely shut down and repaired. Why take a chance? If you drive your Subie hard, you need a Grimmspeed 160_ racing thermostat.

FITMENT:
Subaru Legacy GT 2005-2009
Subaru STI 2004-2007
Subaru STI 2008-2010
Subaru WRX 2002-2007
Subaru WRX 2008-2010

Part Number: 068001

GrimmSpeed 160 Degree Thermostat Install Instructions