Denso 3112 Spark Plug

Overview of Denso 3112 Spark Plug for Mazda Vehicles

The Denso 3112 spark plug is designed specifically for select Mazda models including the 626, 929, B2600, MPV, and MX-6. Engineered to meet the ignition needs of these vehicles, this spark plug ensures reliable secondary ignition performance with its durable materials and precise specifications.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip Design: Standard for consistent spark delivery
• Ground Electrode Core Material: Nickel for durability
• Center Electrode Core Material: Copper for efficient conductivity
• Center Electrode Tip Material: Nickel to withstand high temperatures
• Pre-Gap Size: 1.1 mm for proper spark gap
• Ground Electrode Quantity: Single electrode design
• Hex Size: 16.0 mm for standard installation tools
• Manufacturer Heat Range: 20 suitable for Mazda engine requirements
• Seat Type: Flat for secure seating
• Reach: 19.00 mm thread length
• Thread Diameter: 14.00 mm compatible with specified Mazda models

About the U-Groove Conventional Product Line

The Denso U-Groove Conventional spark plug line features a unique groove design on the center electrode that enhances ignition efficiency and combustion stability. This design helps maintain consistent spark performance and contributes to smoother engine operation. The 3112 part number belongs to this line, offering a balance of durability and reliable ignition suited for conventional ignition systems in Mazda vehicles.

Technical Details and Application

The Denso 3112 spark plug is engineered with a copper core center electrode that provides excellent thermal conductivity, helping to dissipate heat effectively. The nickel ground electrode and tip materials offer resistance to wear and corrosion, extending the service life of the plug. With a pre-gap size of 1.1 mm and a heat range of 20, this spark plug is optimized for the ignition systems of Mazda 626, 929, B2600, MPV, and MX-6 models, ensuring proper combustion and engine efficiency.

Common Issues Addressed by Denso 3112 Spark Plug

• Misfiring or inconsistent engine ignition
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Engine hesitation or rough idling
• Excessive exhaust emissions from poor spark quality

Installation Notes and Tips

When installing the Denso 3112 spark plug, ensure the spark plug gap is set to the manufacturer’s recommended 1.1 mm if adjustment is necessary. Use a 16 mm socket wrench for proper tightening to avoid damage to the flat seat. Verify thread compatibility with the 14 mm diameter and 19 mm reach to ensure correct fitment in the ignition system of the specified Mazda models. It is recommended to replace spark plugs at regular intervals to maintain optimal engine performance.

Quality Assurance and Warranty

Denso manufactures the 3112 spark plug to meet strict quality standards, using high-grade materials such as copper and nickel for durability and reliable performance. While specific warranty details are not provided, Denso products typically adhere to industry standards for automotive ignition components, ensuring consistent quality and fitment for Mazda vehicles.