#2 and #4. #2.
CABLE COMPLETE-HIGH TENSION,NO.2 Spark Plug Wire
Fits Impreza, Legacy, Outback
Spark Plug Wire Set
Spark plug wires in your Subaru carry electricity from the distributor or ignition coil to your spark plugs. Old and failed wires can short out causing anything from hesitation and bucking to excessive interference in your radio.