Denso 3116 Spark Plug

Reliable Ignition Performance for Dodge, Honda, and Mitsubishi Vehicles

The Denso Double Platinum 3116 spark plug is engineered to deliver consistent ignition performance for select Dodge, Honda, and Mitsubishi models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Double platinum electrodes for enhanced durability and stable ignition
• Center electrode with copper core and platinum tip for optimal conductivity
• Ground electrode features a platinum chip with nickel core material
• Standard ground configuration with a single ground electrode
• Pre-gap size of 1.1 mm for precise spark gap
• Flat seat type with 14 mm thread diameter and 19 mm reach
• Hex size of 20.6 mm for easy installation
• Manufacturer heat range rating of 20 for balanced heat dissipation
• Resistance of 5000 ohms to reduce electrical noise interference

About the Denso Double Platinum Spark Plug Line

The Double Platinum line from Denso is designed to provide enhanced durability and consistent ignition performance through the use of platinum on both the center and ground electrodes. This design helps maintain a stable spark gap over time, reducing electrode wear and supporting efficient combustion. The 3116 spark plug benefits from this technology, making it suitable for vehicles requiring reliable secondary ignition components.

Technical Details and Compatibility

The Denso 3116 spark plug features a copper core center electrode with a platinum tip, which improves electrical conductivity and heat transfer. The ground electrode includes a platinum chip and nickel core, contributing to long service life. With a pre-gap size of 1.1 mm and a flat seat design, this spark plug fits securely in the combustion chamber. Its 14 mm thread diameter and 19 mm reach are compatible with various Dodge, Honda, and Mitsubishi models, including the Accord, Civic, Colt, Cordia, Mighty Max, Power Ram 50, Prelude, Ram 50, Starion, and Tredia.

Common Applications and Issues Addressed

• Replacement for worn or fouled spark plugs in compatible Dodge, Honda, and Mitsubishi vehicles
• Helps resolve engine misfires and rough idling caused by degraded ignition components
• Improves cold start performance and throttle response
• Reduces electrical interference with onboard electronics due to 5000 ohm resistance
• Supports consistent combustion for better fuel efficiency

Installation Notes and Tips

Ensure the engine is cool before removing old spark plugs. Use a torque wrench to tighten the Denso 3116 spark plug to the manufacturer’s recommended specifications to avoid damage. Verify the pre-gap size of 1.1 mm before installation, although the plug comes pre-gapped. The 20.6 mm hex size allows for standard spark plug socket compatibility. Proper installation helps maintain optimal ignition performance and longevity.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Double Platinum 3116 spark plug undergoes rigorous testing for heat range, electrode wear, and electrical resistance. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support customer confidence in their ignition components.