Denso 3073 Spark Plug

Reliable Ignition with Denso U-Groove Conventional Spark Plug 3073

The Denso U-Groove Conventional Spark Plug 3073 is engineered to deliver consistent ignition performance for a variety of vehicle makes and models. Designed with a unique U-groove ground electrode tip, this spark plug supports efficient combustion and reliable engine operation.

• U-groove ground electrode tip design for improved spark exposure
• Standard ground configuration with a single ground electrode
• Nickel ground electrode core and tip for durability
• Copper center electrode core with nickel tip for optimal conductivity
• Pre-gap size of 0.7 mm for precise spark gap
• Flat seat type with 14.00 mm thread diameter and 12.70 mm reach
• Hex size of 20.6 mm for standard installation tools
• Manufacturer heat range rating of 20 for balanced thermal performance

About the U-Groove Conventional Product Line

The Denso U-Groove Conventional spark plug line features a distinctive U-shaped groove on the ground electrode tip, which increases the spark exposure area. This design enhances ignition efficiency and contributes to smoother engine operation. The conventional construction balances performance and cost-effectiveness, making it suitable for a wide range of vehicles requiring reliable secondary ignition components.

Technical Details and Performance

The Denso 3073 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 efficiency. With a pre-gap size of 0.7 mm and a flat seat design, this spark plug ensures consistent spark delivery and proper sealing within the combustion chamber. The 14.00 mm thread diameter and 12.70 mm reach make it compatible with many automotive engines requiring these specifications.

Applications and Problem Solving

• Restores stable ignition in vehicles experiencing misfires or rough idling
• Improves fuel combustion efficiency for better engine responsiveness
• Reduces electrode wear and extends spark plug service life
• Helps maintain consistent engine performance under varied operating conditions
• Compatible with vehicles requiring a heat range of 20 and standard thread dimensions

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.7 mm before installation. Use a 20.6 mm socket wrench for proper tightening torque to avoid damage to the electrode or threads. Confirm compatibility with your vehicle’s make and model by verifying thread diameter, reach, and heat range specifications. Proper installation will help maintain optimal ignition performance and engine efficiency.

Quality Assurance and Warranty

Denso spark plugs, including the 3073 model, are manufactured to meet strict quality standards for durability and performance. The use of nickel and copper materials in the electrodes ensures reliable conductivity and resistance to wear. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles.