The Mugen Low Temperature Thermostat opens at a lower temperature than the stock unit allowing coolant to flow through the engine sooner which will help to reduce the engine temperature and improve overall cooling efficiency while on the track or during spirited driving on the street. A must have item that really works! 100% Genuine Mugen product! Made by Mugen Japan.
02-06 Acura RSX
02-05 Honda Civic Si (Hatchback)