You are buying 2x ZGR6B-11 NGK SPARK PLUG FIT Ford Fairmont EFII 4.0L MPFI, OHC,162kW,361Nm 95-96. The workhorse, at the heart of smooth-running engines around the world. Spark Plug. SPARK PLUGS. Spark plugs are the "window" into your engine (your only eyewitness to the combustion chamber), and can be used as a valuable diagnostic tool.