Denso 5365 Spark Plug

Reliable Ignition Performance with Denso Iridium Power Spark Plug 5365

The Denso Iridium Power spark plug 5365 is engineered to deliver consistent ignition and improved combustion efficiency. Designed with advanced materials and precise specifications, this spark plug supports optimal engine performance for various vehicle makes and models.

• Iridium center electrode tip for enhanced durability and ignition
• Tapercut, u-groove ground electrode tip design for better spark exposure
• Slant ground configuration with a single nickel ground electrode
• Copper core center electrode for efficient heat dissipation
• Flat seat type with 19.00 mm reach and 14.00 mm thread diameter
• Pre-gap size of 0.9 mm and manufacturer heat range of 24
• 16.0 mm hex size for standard installation tools
• Resistance rating of 5000 ohms to reduce electrical noise interference

About the Denso Iridium Power Product Line

The Iridium Power line from Denso focuses on delivering spark plugs with iridium-tipped electrodes that provide a fine spark for improved combustion. This product line is designed to enhance throttle response and fuel efficiency while maintaining long service life. The 5365 spark plug benefits from these features, making it suitable for drivers seeking reliable secondary ignition components.

Technical Details and Specifications

The Denso 5365 spark plug features a copper core center electrode with an iridium tip, combining excellent conductivity with wear resistance. The ground electrode uses a nickel core with a tapercut, u-groove tip design and a slant configuration to optimize spark exposure and combustion. The flat seat ensures proper sealing in compatible cylinder heads. With a reach of 19.00 mm and a thread diameter of 14.00 mm, this spark plug fits specific engine designs requiring these dimensions. The pre-gap is set at 0.9 mm, and the heat range is 24, suitable for engines needing moderate heat dissipation. The 5000 ohm resistance helps minimize radio frequency interference, protecting vehicle electronics.

Applications and Common Issues Addressed

• Improves ignition reliability in vehicles experiencing misfires or rough idling
• Helps restore fuel efficiency in engines with worn or degraded spark plugs
• Reduces engine hesitation during acceleration
• Supports stable combustion in vehicles with secondary ignition system requirements
• Mitigates electrical noise that can affect onboard electronics

Installation Notes and Tips

Ensure the spark plug gap is set to 0.9 mm before installation if adjustment is necessary. Use a 16.0 mm socket wrench for proper tightening torque. Verify compatibility with your vehicle’s engine specifications, particularly thread diameter (14.00 mm) and reach (19.00 mm), to avoid damage to the cylinder head. Avoid over-tightening to prevent thread stripping or seat damage.

Quality Assurance and Warranty

Denso manufactures the Iridium Power 5365 spark plug to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details are not provided, Denso products typically come with manufacturer-backed quality assurance. Refer to your vehicle’s service manual and Denso’s guidelines for maintenance intervals and replacement recommendations.