Denso 5366 Spark Plug

Reliable Ignition Performance with Denso Iridium Power Spark Plug 5366

The Denso Iridium Power spark plug 5366 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 a 0.9 mm pre-gap size for precise spark gap
• 16.0 mm hex size and 14.00 mm thread diameter for secure fitment
• Manufacturer heat range of 27 and 19.00 mm reach for compatibility
• Resistance rating of 5000 ohms to reduce electrical noise

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 balance of durability and performance. This product line is designed to improve ignition efficiency and fuel combustion, which can contribute to smoother engine operation and potentially better fuel economy. The 5366 spark plug is part of this line, featuring a copper core and nickel ground electrode to support heat management and longevity.

Technical Details and Application

The Denso 5366 spark plug features a copper core center electrode with an iridium tip, which enhances ignition reliability and electrode life. The tapercut, u-groove ground electrode tip design increases spark exposure, promoting more complete combustion. Its slant ground configuration and single nickel ground electrode provide a stable spark path. The flat seat type and 0.9 mm pre-gap size ensure consistent spark gap for reliable ignition. With a 16.0 mm hex size and 14.00 mm thread diameter, this spark plug fits securely in compatible engines. The manufacturer heat range of 27 and 19.00 mm reach make it suitable for specific vehicle applications requiring these specifications.

Common Issues Addressed by Denso 5366 Spark Plug

• Engine misfires due to worn or inefficient spark plugs
• Reduced fuel efficiency from incomplete combustion
• Difficulty starting the engine in cold or damp conditions
• Rough idling or hesitation during acceleration
• Excessive emissions caused by poor ignition

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.9 mm as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. Ensure the spark plug threads are clean and free of debris. It is advisable to replace spark plugs in sets to maintain consistent engine performance. Compatible with vehicles requiring a 14.00 mm thread diameter and 19.00 mm reach.

Quality Assurance and Warranty

Denso spark plugs, including the Iridium Power 5366, are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Always consult the vehicle’s service manual and Denso’s warranty information for precise coverage details.