Denso 3117 Spark Plug

Reliable Ignition Performance for Lexus, Nissan, and Toyota Vehicles

The Denso Double Platinum 3117 spark plug is engineered to deliver consistent ignition performance for select Lexus, Nissan, and Toyota models. Designed with durable platinum electrodes and optimized materials, this spark plug supports efficient combustion and engine reliability.

• Double platinum chip ground electrode tip for enhanced durability
• Copper core center electrode with platinum tip for stable ignition
• Standard ground configuration with nickel core ground electrode
• Pre-gap size of 1.1 mm for precise spark delivery
• Flat seat type with 14 mm thread diameter and 19 mm reach
• Hex size of 16.0 mm for easy installation
• Manufacturer heat range rating of 20 suitable for various driving conditions
• Resistance of 5000 ohms to reduce electrical noise interference

About the Denso Double Platinum Spark Plug Line

The Double Platinum line from Denso features spark plugs with platinum material on both the center and ground electrodes. This design improves electrode wear resistance and maintains a stable spark over time, which is critical for maintaining engine efficiency and reducing misfires. The 3117 part number belongs to this line, offering a balance of durability and performance for vehicles like the Lexus ES250, Nissan Maxima, and Toyota Camry.

Technical Details and Compatibility

The Denso 3117 spark plug incorporates a copper core center electrode with a platinum tip, enhancing thermal conductivity and spark stability. The ground electrode uses a platinum chip tip over a nickel core, providing resistance to electrode erosion. With a pre-gap size of 1.1 mm and a flat seat design, this spark plug ensures proper sealing and optimal spark gap for combustion. Its 14 mm thread diameter and 19 mm reach make it compatible with specific engine designs found in the 200SX, MR2, Pulsar NX, and ES300 models.

Common Applications and Problem Solving

• Helps reduce engine misfires in Lexus ES250 and Toyota Camry
• Improves ignition stability in Nissan Maxima and 200SX
• Supports smooth engine starts and consistent power delivery
• Addresses rough idling and poor fuel efficiency issues
• Minimizes electrical interference with 5000 ohm resistance

Installation Notes and Tips

When installing the Denso 3117 spark plug, ensure the pre-gap of 1.1 mm is maintained for optimal performance. Use a 16 mm socket wrench to tighten the spark plug to the manufacturer’s torque specifications. The flat seat design requires proper seating to avoid compression leaks. It is recommended to inspect the ignition system and replace spark plugs in sets to maintain balanced engine operation.

Quality Assurance and Warranty

Denso spark plugs undergo rigorous quality control to meet OEM standards. The Double Platinum 3117 spark plug is manufactured with precision materials to ensure durability and consistent performance. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.