Denso 5394 Spark Plug

Overview of Denso Iridium Power Spark Plug 5394

The Denso Iridium Power spark plug 5394 is engineered for reliable secondary ignition performance. Designed with advanced materials and precise specifications, it supports efficient combustion and consistent engine operation in various vehicle applications.

• 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
• Pre-gap size of 0.7 mm for optimal spark gap
• Flat seat type with 22 mm reach and 12 mm thread diameter
• Hex size of 18.0 mm for standard installation tools
• Manufacturer heat range rating of 24
• Resistance value of 5000 ohms to reduce electrical noise

Detailed Features and Specifications

The Denso 5394 spark plug features an iridium center electrode tip, known for its high melting point and wear resistance, which contributes to longer service life and stable ignition. The copper core center electrode enhances thermal conductivity, helping to dissipate heat effectively. The ground electrode uses a nickel core with a tapercut, u-groove tip design, which improves spark exposure and combustion efficiency. This spark plug has a pre-gap size of 0.7 mm, ensuring optimal spark performance for smooth engine operation.

With a flat seat type and a reach of 22.00 mm, the Denso 5394 is designed to fit specific engine configurations requiring these dimensions. The 12 mm thread diameter and 18.0 mm hex size allow for compatibility with common installation tools. The manufacturer heat range of 24 indicates its thermal characteristics suitable for certain engine types. Additionally, the 5000 ohm resistance helps minimize electromagnetic interference with vehicle electronics.

About the Iridium Power Product Line

The Denso Iridium Power line focuses on delivering spark plugs with iridium-tipped electrodes that provide enhanced durability and consistent ignition performance. This product line is designed to improve throttle response and fuel efficiency while maintaining reliable operation under various driving conditions. The 5394 spark plug is part of this line, combining iridium technology with precise engineering to meet the demands of modern engines.

Applications and Problem Solving

• Compatible with vehicles requiring a 22 mm reach and 12 mm thread diameter spark plug
• Addresses issues related to misfires and inconsistent ignition
• Helps reduce engine hesitation and rough idling
• Improves combustion efficiency for better fuel economy
• Reduces electrical interference affecting onboard electronics

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.7 mm pre-gap before installation. Use an 18 mm socket wrench for proper tightening to avoid damage to the flat seat. Verify compatibility with your vehicle’s make and model, focusing on thread diameter and reach specifications. Avoid over-tightening to prevent thread damage in the cylinder head.

Quality Assurance and Warranty

Denso manufactures the 5394 spark plug to meet strict quality standards, ensuring reliable performance and durability. The use of iridium and copper materials supports long service life. Warranty coverage details should be confirmed with the vehicle manufacturer or parts distributor, as they may vary by application.