DENSO 3539 Iridium Long Life Spark Plug

The DENSO 3539 Iridium Long Life spark plug delivers premium ignition performance and exceptional durability for gasoline engines. Featuring a fine iridium center electrode, this spark plug provides superior ignitability and extends service intervals significantly beyond conventional copper plugs.

Key Features:

• Ultra-fine 0.6mm iridium center electrode concentrates spark energy for reliable ignition
• Long life design reduces maintenance frequency and replacement costs
• Enhanced fuel efficiency and reduced emissions compared to standard plugs
• Improved throttle response and engine performance across all RPM ranges
• Manufactured to strict OE specifications for durability and emissions standards
• Superior resistance to fouling and electrode wear

DENSO iridium spark plugs are engineered to deliver consistent performance over extended service intervals, making them an excellent choice for both OE replacement and performance upgrades. The iridium electrode material has a melting point of 2,454°C, allowing it to maintain optimal shape and performance even under extreme combustion temperatures.