An unmuffled car or truck's engine is exceedingly noisy - to lower the noise to an acceptable level, a Honda Civic is equipped with a muffler. Explosions that are a consequence of the combustion process are silenced by the Muffler Kit. Your auto won't run at the highest level while having an inoperative Muffler Kit, so fix it as soon as possible. Repairing your vehicle with a Bosal Muffler Kit (SKU W0133-1903471) in your Honda Civic will ensure that your car is operating as it should. The Bosal Muffler Kit will work with Honda Civics built in '84, '85, '86, '87, '88, '89, '90, '91, '92, '93, '94, '95, '96, '97, '98, '99, '00, '01, '02, '03, '04, '05, '06 and '07.