Original Mopar spark plugs for Dodge Charger Chrysler Challenger 3.5

Original Mopar spark plugs. 3.5 from Mopar American company. Fits Charger Chrysler from model 2005 - 2010. The mentioned price is for a set of 6 spark plugs. Signs of spark plug wear: - Difficulty starting the engine - Unusual vibrations while driving - Lack of acceleration - Increased fuel consumption - Abnormal exhaust emissions