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and rapid heat dissipation
Replace when dirty to maintain peak performance power
RAYS logo and the 57 mark is embossed onto the spoke
AEM Dryflow Air Filters are washable synthetic air filters designed for an optimum combination of air flow
bored and honed to 86
Subaru Thermostat - STI 04+ Gates and rapid heat dissipationCooling System Repair or ReplaceIf your thermostat has failed, it can stick open or stick closed. A thermostat that's stuck closed will result in an overheat that happens after the engine has been running for a few minutes. If it's stuck open, the engine will never reach proper operating temperature. Both can do long term damage to the engine in your 2018 Subaru STI, so contact a Subaru technician.
