Denso 3127 Spark Plug

Reliable Ignition Performance for Select Geo, Lexus, and Toyota Models

The Denso Double Platinum 3127 spark plug is engineered to deliver consistent ignition performance for a range of vehicles including the Toyota Celica, Lexus LS400, and Geo Prizm. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Double platinum electrodes for enhanced durability and stable spark
• Center electrode core made of copper for optimal conductivity
• Ground electrode tip features a platinum chip for extended wear
• Standard ground configuration with nickel core material
• Pre-gap size of 0.8 mm for precise ignition timing
• 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

Detailed Description of Denso Double Platinum 3127 Spark Plug

This Denso spark plug, part number 3127, belongs to the Double Platinum line, which is designed to provide longer service life and consistent ignition performance. The double platinum design includes a platinum chip on the ground electrode tip and a platinum center electrode tip, which helps maintain a stable spark and reduces electrode wear over time. The copper core center electrode enhances thermal conductivity, improving heat dissipation and combustion efficiency. The ground electrode uses a nickel core with a standard configuration, balancing durability and performance. With a pre-gap size of 0.8 mm and a flat seat type, this spark plug ensures proper fit and ignition timing for compatible vehicles.

Compatible Vehicles and Applications

The Denso Double Platinum 3127 spark plug is compatible with a variety of makes and models, including:

• Geo Prizm
• Lexus LS400, CL600, CL65 AMG, S600, S65 AMG, SL600, SL65 AMG
• Mercedes-Benz CL600, CL65 AMG, S600, S65 AMG, SL600, SL65 AMG
• Mitsubishi Montero
• Nissan Quest
• Toyota Celica, Corolla, MR2, Tundra, Sequoia

Common Issues Addressed by This Spark Plug

• Misfiring or rough idling due to worn electrodes
• Reduced fuel efficiency from inconsistent spark delivery
• Difficulty starting the engine in cold conditions
• Engine hesitation or loss of power under load
• Electrical interference affecting onboard electronics

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.8 mm before installation
• Use a 16 mm socket wrench for proper torque application
• Verify the flat seat type matches the engine’s cylinder head design
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage or improper sealing

Quality Assurance and Warranty

Denso manufactures the Double Platinum 3127 spark plug to meet strict quality standards, ensuring reliable ignition performance and durability. While specific warranty details may vary, Denso products typically come with a limited warranty against manufacturing defects. Always consult vehicle and product documentation for warranty coverage and installation guidelines.