Denso 5384 Spark Plug

Reliable Ignition with Denso Iridium Power Spark Plug 5384

The Denso Iridium Power spark plug 5384 is engineered to deliver consistent ignition performance for a variety of vehicles. Designed with advanced materials and precise specifications, it supports efficient combustion and engine responsiveness.

• Iridium center electrode tip for enhanced durability and ignition
• Tapercut, u-groove ground electrode tip design for improved spark exposure
• Copper core center electrode for optimal conductivity
• Nickel ground electrode core material with standard ground configuration
• Flat seat type with 14.00 mm thread diameter and 12.70 mm reach
• Pre-gap size of 0.8 mm for precise spark gap
• Hex size of 16.0 mm for standard installation tools
• Manufacturer heat range rating of 24 for balanced thermal performance
• 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 fine spark for improved combustion efficiency. This product line is designed to enhance ignition reliability and longevity compared to conventional plugs, making it suitable for drivers seeking consistent engine performance and fuel efficiency.

Technical Details and Performance

The Denso 5384 spark plug features a copper core center electrode that ensures excellent electrical and thermal conductivity. The iridium tip on the center electrode offers a hard, wear-resistant surface that maintains spark quality over time. The ground electrode uses a tapercut, u-groove design to maximize spark exposure and improve ignition. With a flat seat and a thread diameter of 14.00 mm, this spark plug fits many vehicle applications requiring these specifications. The pre-gap size of 0.8 mm is factory set to optimize spark timing and combustion.

Common Applications and Issues Addressed

• Restores engine misfire caused by worn or fouled spark plugs
• Improves cold start performance and throttle response
• Reduces ignition system electrical noise with 5000 ohm resistance
• Helps maintain fuel efficiency by ensuring consistent combustion
• Supports stable engine operation under various driving conditions

Installation Notes and Tips

Ensure the spark plug gap is checked before installation, although the pre-gap is factory set at 0.8 mm. Use a 16 mm socket wrench for proper tightening to avoid damage to the flat seat. Verify compatibility with your vehicle’s make and model by cross-referencing the thread diameter, reach, and heat range specifications. Avoid over-tightening to prevent thread damage.

Quality Assurance and Warranty

Denso spark plugs, including the Iridium Power 5384, are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary by retailer or vehicle manufacturer, Denso products typically come with a limited warranty covering defects in materials and workmanship.