DENSO Iridium Long Life Spark Plug

The DENSO Iridium Long Life spark plug is a premium iridium-tipped ignition plug. It is built for dependable starts, steady idle quality, and consistent combustion over an extended service life. DENSO is an original equipment supplier to automakers worldwide. This line brings the same engineering to aftermarket replacement.

Key Features:

• Iridium center electrode: Iridium is a very hard, high-melting-point metal. It resists electrode wear and keeps performance stable as the plug ages.
• Fine-wire design: A small-diameter center electrode concentrates the spark. This supports efficient ignition, good throttle response, and reliable cold starts.
• Long service life: The durable electrode materials are designed for extended replacement intervals compared with conventional nickel plugs.
• Quality construction: Each plug has a precision-engineered ceramic insulator and a corrosion-resistant metal shell. These help it handle heat, vibration, and combustion pressure.
• Consistent quality: The plugs are made to strict manufacturing standards and use proven OEM-grade technology.

These plugs help restore smooth engine operation, support good fuel efficiency, and keep emissions in check. Choose the specific part number for your application from the options listed on this page.