Denso 3312 Spark Plug

Reliable Ignition with Denso U-Groove Conventional Spark Plug 3312

The Denso U-Groove Conventional Spark Plug 3312 is engineered to deliver consistent ignition performance for a variety of vehicles. Designed with a unique U-groove ground electrode tip and durable 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 19.00 mm reach and 12.00 mm thread diameter
• Pre-gap size of 0.9 mm for precise spark gap
• Hex size of 16.0 mm for standard installation tools
• Manufacturer heat range of 24 suitable for moderate engine temperatures

About the U-Groove Conventional Product Line

The Denso U-Groove Conventional spark plug line features a distinctive U-groove ground electrode tip designed to increase spark exposure to the air-fuel mixture. This design enhances ignition efficiency and combustion stability. The conventional construction uses nickel and copper materials to balance durability and conductivity, making it suitable for a wide range of gasoline engines requiring reliable secondary ignition components.

Technical Details and Performance

The Denso 3312 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, which can contribute to more complete combustion. With a flat seat and a 19.00 mm reach, this spark plug fits engines designed for these specifications. The 0.9 mm pre-gap ensures optimal spark gap for ignition performance, while the 16.0 mm hex size allows for easy installation using common tools.

Applications and Problem Solving

• Restores proper ignition in engines experiencing misfires or rough idling
• Helps improve fuel efficiency by ensuring consistent spark delivery
• Reduces carbon buildup with efficient combustion characteristics
• Suitable for vehicles requiring a heat range 24 spark plug
• Compatible with engines designed for a 12.00 mm thread diameter and 19.00 mm reach spark plug

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.9 mm to match engine specifications. Use a 16.0 mm socket wrench for proper tightening torque to avoid damage to the spark plug or cylinder head. Ensure the flat seat type matches the engine’s cylinder head design for a secure seal. It is recommended to inspect the ignition system and replace spark plugs in sets to maintain balanced engine performance.

Quality Assurance and Warranty

Denso spark plugs, including the U-Groove Conventional 3312, are manufactured to meet strict quality standards for durability and performance. The use of nickel and copper materials ensures resistance to wear and thermal stress. While specific warranty details are not provided, Denso products typically adhere to industry standards for reliability and are backed by the manufacturer’s quality control processes.