NGK V-Power Spark Plugs (3.8L)

NGK V-Power Spark Plugs (6-pack) NGK v-power plugs have a copper core. Performance and improved ignitability over standard Spark Plugs. Original equipment manufacturer and racer approved. Copper core plugs are recommended for a 3.8l supercharged and non-supercharged vehicles Lowers ignition system voltage requirements Tried and true copper core design elements ideal for Supercharged engines V-power conductor controls flame formation and propagation.  Greater ignitability and performance over conventional spark plugs Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties Increased fuel economy and lower emissions Highly durable against electrical and chemical wear Good performance spark plug NGK V-Power Spark Plugs fit the following vehicles: 2007-2011 Jeep Wrangler JK 3.8 PLEASE NOTE: SPARK PLUGS DO NOT HAVE A WARRANTY.  Pro Tips: Check Spark plug gap! Never install a spark plug without first checking gap and carefully adjusting if necessary. (these plugs are NOT pre-gapped) Supercharged vehicle - Use .032 gap. Non-supercharged vehicle - Use factory specified gap. (see fsm) Inspect plugs for hairline cracks and damage before installation. Plugs can be mishandled, dropped and damaged. Carefully inspect a plug's electrode, porcelain and ceramic portion.  Apply Anti-seize compound to spark plug threads. Apply dielectric grease to coil pack/spark plug wire boot. Always tighten to manufacturer's recommended torque spec.  Read your old spark plugs; Reading an older plug removed from an engine can play a crucial roll in engine health! Check old Gap!: Checking gap on a old plug that's been removed is commonly overlooked! Recording gap size on a used plug will help the user determine how often plugs should be serviced. As plugs wear the gap will increase in size.  Coloration: The color of the insulator nose and electrodes can indicate if a engine is operating smoothly or requires some adjustments.  Deposits: Examining deposits on the spark plug can reveal information about the fuel and oil consumption.