The Wells Vehicle Electronics Distributor Cap and Rotor Kit is designed to meet or exceed OE (Original Equipment) specifications in form, fit and function. It also decreases the chance for error by preventing confusion on what cap goes with what rotor. A distributor cap passes voltage from the ignition coil to the spark plug to ignite the air/fuel mixture in the engine's cylinders, making the power necessary to move the vehicle. The Wells Vehicle Electronics distributor cap and rotor send high secondary current to the proper ignition wire. When not replaced, a vehicle may experience CEL (Check Engine Light)/MIL (Malfunction Indicator Lamp) illumination, misfire, internal engine damage, high fuel consumption, loss of power and/or failed emissions test. Every component either matches or improves on the OE design to ensure fast, easy installation, superior performance and reliability.