|  |  Tomei 4G63 Thermo Killer
One of the weak points of the 4G63 is engine cooling; the small frontal openings, combined with obstructed airflow from a front-mounted intercooler, can lead to difficulties keeping the engine cool. The "Thermo killer" eliminates the oil thermostat, allowing oil flow to the oil cooler regardless of temperatture, keeping your oil system from being restrictive at low temperatures. Easy installation means you can switch it back easily for the winter months if necessary. A must for circuit racing or drag racing.
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