Denso 4022 Spark Plug

Reliable Ignition Performance with Denso U-Groove Conventional Spark Plug

The Denso 4022 spark plug is engineered to deliver consistent ignition performance for a variety of vehicles. Designed with a U-groove ground electrode tip and quality core materials, this spark plug supports efficient combustion and engine reliability.

• U-groove ground electrode tip design for improved spark exposure
• Nickel ground electrode core and tip for durability
• Copper center electrode core with nickel tip for optimal conductivity
• Standard ground configuration with a single ground electrode
• Flat seat type with 14.00 mm thread diameter and 12.70 mm reach
• Pre-gap size of 0.7 mm for precise spark gap
• Hex size of 20.6 mm for easy installation
• Manufacturer heat range rating of 22
• Resistance of 5000 ohms to reduce electrical noise interference

About the U-Groove Conventional Product Line

The Denso U-Groove Conventional spark plug line features a unique U-shaped groove on the ground electrode tip. This design increases the spark exposure area, which can enhance ignition efficiency and combustion stability. The conventional construction uses durable nickel and copper materials to balance performance and longevity, making it suitable for many standard ignition systems.

Technical Details and Application

The Denso 4022 spark plug incorporates a copper core center electrode with a nickel tip, providing excellent thermal conductivity and wear resistance. The single nickel ground electrode with a U-groove tip improves spark distribution and combustion. With a flat seat and a thread diameter of 14.00 mm, this spark plug fits applications requiring a 12.70 mm reach and a heat range of 22. The 0.7 mm pre-gap ensures optimal spark gap for reliable ignition. The 5000 ohm resistance helps minimize radio frequency interference, supporting stable engine electronics.

Common Issues Addressed by Denso 4022 Spark Plug

• Engine misfires due to inconsistent spark delivery
• Reduced fuel efficiency from incomplete combustion
• Difficulty starting the engine in cold conditions
• Excessive engine vibration caused by ignition irregularities
• Interference with vehicle electronics from spark plug noise

Installation Notes and Tips

Ensure the spark plug seat type matches your engine’s specifications; the Denso 4022 features a flat seat. Use a 20.6 mm socket for installation and torque to manufacturer recommendations to avoid damage. Verify the pre-gap of 0.7 mm before installation, adjusting if necessary. This spark plug is compatible with vehicles requiring a 14.00 mm thread diameter and 12.70 mm reach. Always consult your vehicle’s service manual for fitment confirmation.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict quality standards, ensuring reliable ignition performance and durability. The 4022 part number undergoes rigorous testing for heat range, resistance, and electrode integrity. While specific warranty details vary by distributor, Denso products typically include coverage against manufacturing defects. Refer to your point of purchase for warranty terms.