DENSO 5359 Iridium Power Spark Plug - IWF16

The DENSO 5359 Iridium Power Spark Plug delivers superior ignition performance through advanced iridium technology and precision engineering. This premium spark plug features the world's smallest iridium center electrode at just 0.4mm diameter, which reduces required voltage and significantly improves firing efficiency compared to conventional spark plugs.

Key Features:

• 0.4mm iridium-tipped laser-welded center electrode for maximum durability and performance
• Patented U-Groove ground electrode design increases ignitability and decreases quenching
• Iridium rhodium alloy construction withstands temperatures exceeding 4000°F
• 5-rib insulator design prevents flashover
• Purified alumina powder insulator provides exceptional strength and thermal conductivity
• Machine-rolled threads prevent seizing or cross-threading during installation
• 100% pre-fired to ensure highest quality standards

Performance Benefits:

• Improved acceleration and throttle response
• Enhanced fuel efficiency and reduced emissions
• Lower required spark voltage for reliable ignition
• Superior resistance to fouling compared to standard plugs
• Extended service life due to iridium's extreme hardness

The tapered cut ground electrode and ultra-fine iridium center electrode work together to maximize spark energy and allow the flame kernel to grow unobstructed, resulting in more complete combustion. This DENSO Iridium Power spark plug is suitable for a wide range of automotive and powersports applications. Sold individually.