Denso 3031 Spark Plug

Overview of Denso 3031 U-Groove Conventional Spark Plug

The Denso 3031 spark plug is engineered for reliable ignition performance in a wide range of vehicles including BMW, Ford, Toyota, and Volkswagen models. Featuring a U-groove ground electrode tip design, this spark plug supports efficient combustion and consistent engine operation.

• U-groove ground electrode tip for improved spark exposure
• Nickel ground and center electrode tips for durability
• Copper core center electrode for enhanced conductivity
• Standard ground configuration with a single ground electrode
• Flat seat type with 14mm thread diameter and 19mm reach
• Pre-gap size of 0.8 mm for optimal spark gap
• Hex size of 20.6 mm for easy installation
• Manufacturer heat range rating of 16
• Resistance of 5000 ohms to reduce radio frequency interference

Detailed Product Features and Specifications

The Denso 3031 spark plug belongs to the U-Groove Conventional product line, which is designed to provide dependable ignition with a unique U-groove ground electrode tip. This design increases the spark exposure area, promoting better combustion efficiency and smoother engine performance. The spark plug’s center electrode features a copper core for superior electrical conductivity, while the nickel tip on both the center and ground electrodes ensures resistance to wear and corrosion. The flat seat type and 14mm thread diameter make it compatible with many secondary ignition systems across various vehicle makes and models.

Compatible Vehicles and Applications

This spark plug is compatible with a broad range of vehicles, including but not limited to BMW 3 Series models like the 318i and 325i, Ford trucks, Toyota 4Runner, Volkswagen models, and luxury brands such as Mercedes-Benz and Jaguar. The Denso 3031 is suitable for use in secondary ignition systems where a 0.8 mm pre-gap and a heat range of 16 are specified.

• Improves ignition reliability in BMW 320i and 325is engines
• Reduces misfires in Toyota 4Runner and Volkswagen vehicles
• Supports consistent spark delivery in Ford and Chevrolet models
• Helps maintain engine performance in Mercedes-Benz and Jaguar cars

Installation Notes and Tips

When installing the Denso 3031 spark plug, ensure the pre-gap is set to 0.8 mm if adjustment is necessary. Use a 20.6 mm socket for proper tightening to avoid damage to the electrode or threads. The flat seat design requires careful seating to ensure a proper seal. Always follow the vehicle manufacturer’s torque specifications and installation procedures to maintain optimal performance and prevent thread damage.

Quality Assurance and Warranty

Denso spark plugs, including the 3031 part number, are manufactured to meet strict quality standards for durability and performance. The use of nickel and copper materials in the electrodes ensures long service life and resistance to wear. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support reliable operation in compatible vehicles.