NGK Laser Iridium Spark Plug IZFR6K13 14mm Thread, 0.749 in Reach | High Durability & Faster Starts

• Laser welded iridium center electrode tip ensures high durability and greater spark
• Platinum disc welded to backside of ground electrode provides long life
• Longer insulator nose prevents fouling, corrugated ribs on insulator prevents flashover, and the triple gasket seal eliminates combustion gas leakage
• Faster starts and quicker acceleration
• Better fuel economy and lower emissions, trivalent metal plating for superior anti-corrosion and anti-seizing

• Verify Fitment — Confirm the NGK IZFR6K13 part number matches your vehicle's OEM specification or a verified cross-reference for your exact make, model, engine, and year. Incorrect plugs can damage your engine.
• Check and Adjust Gap — While often pre-gapped, use a spark plug gap tool to verify the electrode gap matches your vehicle manufacturer's recommended clearance (typically in mm). Adjust carefully if needed.
• Install Spark Plugs — Remove old spark plugs. Install new NGK plugs by hand to avoid cross-threading, then tighten to the manufacturer's specified torque using a torque wrench. Do not overtighten.
• Reconnect Ignition System — Reconnect spark plug wires or ignition coils securely to the new plugs. Ensure all connections are firm and properly seated before starting the engine.

Typical situations where NGK Laser Iridium Spark Plug IZFR6K13 14mm Thread helps — illustrative scenarios, not customer reviews.