This is a premium, long-life iridium spark plug designed for better fuel efficiency, smoother performance, and extended service intervals (often 100,000+ miles depending on the vehicle). DENSO iridium plugs like this are original equipment on many Toyota, Honda, Lexus, Infiniti, and other vehicles.
Key Features & Specs
• Type: Iridium Long Life (high-performance OE-style plug).
• Center Electrode: 0.7mm fine-wire Iridium tip (laser-welded for durability and excellent ignitability).
• Ground Electrode: Platinum-tipped.
• 26.5mm reach (long reach), gasket seat.
• Hex Size: 5/8” (16mm).
• Gap: Pre-set at approximately 1.1mm (0.043”).
• Resistor: Yes (5kΩ) to reduce electrical noise.
• Design: Projected insulator, solid terminal, copper-glass seal, high-strength alumina insulator.