Denso 5348 Spark Plug

Overview of Denso Iridium Power Spark Plug 5348

The Denso Iridium Power spark plug 5348 is engineered for reliable ignition performance in select Acura and Honda vehicles. Designed specifically for models like the Civic, NSX, RSX, and S2000, this spark plug offers precise electrode construction to support efficient combustion.

• Iridium center electrode tip for enhanced durability
• Tapercut, u-groove ground electrode tip design
• Copper core center electrode for improved conductivity
• Nickel ground electrode core material with standard ground configuration
• Flat seat type with 19.00 mm reach and 14.00 mm thread diameter
• Pre-gap size of 0.8 mm and hex size of 16.0 mm
• Manufacturer heat range rating of 22
• Resistance value of 5000 ohms

Detailed Product Features and Specifications

The Denso Iridium Power 5348 spark plug features a copper core center electrode with an iridium tip, which provides a balance of excellent electrical conductivity and wear resistance. The ground electrode uses a nickel core with a tapercut, u-groove tip design to optimize spark exposure and combustion efficiency. This spark plug has a single ground electrode and a standard ground configuration, ensuring compatibility with the ignition systems of Acura and Honda vehicles such as the Civic, NSX, RSX, and S2000. The flat seat type and 19.00 mm reach allow for proper fitment and sealing in the combustion chamber. Additionally, the 0.8 mm pre-gap size is factory set to support optimal ignition performance. The 16.0 mm hex size facilitates installation with common spark plug sockets.

About the Iridium Power Product Line

Denso's Iridium Power line is designed to provide enhanced ignition performance through the use of iridium-tipped center electrodes. This material choice improves electrode longevity and spark efficiency compared to conventional spark plugs. The Iridium Power series targets drivers seeking reliable ignition components that maintain consistent performance over time, particularly in performance-oriented vehicles like the Acura NSX and Honda S2000.

Compatible Vehicles and Common Applications

• Replacement spark plug for Acura Civic, NSX, RSX, and S2000 models
• Addresses issues such as misfires, rough idling, and poor fuel economy
• Helps restore smooth engine start and consistent acceleration
• Suitable for secondary ignition system maintenance

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.8 mm before installation if adjustment is needed
• Use a 16 mm spark plug socket for proper torque application
• Verify thread diameter of 14.00 mm and reach of 19.00 mm for compatibility
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head

Quality Assurance and Warranty

Denso manufactures the Iridium Power 5348 spark plug to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.