Denso 3114 Spark Plug

Reliable Ignition Performance for Select Dodge, Honda, and More

The Denso Double Platinum 3114 spark plug is engineered to deliver consistent ignition and efficient combustion for a range of vehicles including Dodge Challenger, Honda Accord, and Hyundai Sonata. Designed with durable materials and precise specifications, this spark plug supports optimal engine performance and fuel efficiency.

• Double platinum electrodes for enhanced durability and stable ignition
• 5000 ohm resistance to reduce electrical noise and protect ignition components
• Platinum chip ground electrode tip for improved wear resistance
• Copper core center electrode for superior conductivity
• Standard ground configuration with a single ground electrode
• Flat seat type with 14mm thread diameter and 19mm reach for proper fitment
• Pre-gap size of 1.1 mm optimized for efficient spark generation
• Hex size of 20.6 mm for easy installation
• Manufacturer heat range of 16 suitable for a variety of driving conditions

About the Denso Double Platinum Spark Plug Line

The Double Platinum line from Denso features spark plugs with platinum on both the center and ground electrodes. This design enhances electrode longevity and maintains consistent spark performance over time. The 3114 part number benefits from this technology, providing reliable ignition for vehicles such as the Mazda 323, Mitsubishi Montero, and Nissan Sentra. Double Platinum plugs are engineered to reduce misfires and maintain engine efficiency under various operating conditions.

Technical Details and Specifications

The Denso 3114 spark plug incorporates a copper core center electrode with a platinum tip, which improves electrical conductivity and heat dissipation. The ground electrode uses a nickel core with a platinum chip tip, enhancing durability against wear and corrosion. The plug’s resistance rating of 5000 ohms helps minimize electromagnetic interference with vehicle electronics. With a flat seat and a thread diameter of 14 mm, this spark plug fits securely in compatible engines. The 19 mm reach and 1.1 mm pre-gap size are designed to optimize combustion chamber ignition.

Applications and Common Issues Addressed

• Restores smooth engine starting and consistent ignition in Dodge Challenger and Honda Civic models
• Reduces engine misfires and rough idling in Hyundai Santa Fe and Kia Optima vehicles
• Improves fuel efficiency and throttle response for Mitsubishi Montero and Nissan Pulsar NX
• Helps prevent spark plug fouling and electrode wear in Mazda 323 and Mitsubishi Mighty Max
• Supports stable combustion in a variety of driving conditions for multiple makes and models

Installation Notes and Tips

• Ensure the spark plug gap is set to 1.1 mm before installation if not pre-gapped
• Use a torque wrench to tighten the plug to manufacturer specifications to avoid damage
• Check compatibility with your vehicle’s make and model, including thread size and reach
• Inspect ignition wires and coils for wear when replacing spark plugs
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer

Quality Assurance and Warranty

Denso spark plugs, including the Double Platinum 3114, are manufactured to meet strict quality standards for durability and performance. The use of premium materials such as platinum and copper ensures long service life and reliable ignition. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support proper function and fitment in compatible vehicles.