Denso 3145 Spark Plug

Overview of Denso 3145 Spark Plug

The Denso 3145 spark plug is engineered for reliable ignition performance in a variety of vehicles including Audi A4, Chevrolet Cruze, and Volkswagen Golf models. Designed with a U-groove ground electrode tip, this spark plug ensures efficient combustion and consistent engine operation.

• U-groove ground electrode tip design for improved spark exposure
• Nickel ground electrode core and tip for durability
• Copper center electrode core for optimal conductivity
• Flat seat type with 14mm thread diameter and 19mm reach
• Pre-gap size of 0.8 mm for precise ignition timing
• Standard ground configuration with a single ground electrode
• Hex size of 16.0 mm for easy installation
• Manufacturer heat range of 20 suitable for various driving conditions

Detailed Product Features and Specifications

The Denso 3145 spark plug belongs to the U-Groove Conventional product line, which focuses on conventional spark plugs featuring a unique U-groove ground electrode tip design. This design increases the spark exposure area, promoting better ignition and combustion efficiency. The spark plug’s center electrode core is made of copper, known for excellent electrical conductivity, while the nickel ground electrode core and tip provide resistance to wear and corrosion. With a resistance rating of 5000 ohms, this spark plug helps reduce electromagnetic interference with vehicle electronics.

The flat seat type and 14mm thread diameter ensure compatibility with a wide range of engines, while the 19mm reach and 0.8mm pre-gap size are optimized for precise ignition performance. The single ground electrode configuration maintains a standard design that fits many Audi, Cadillac, Chevrolet, Chrysler, Dodge, INFINITI, Mazda, Mercedes-Benz, Subaru, Volkswagen, and Volvo models.

Compatible Vehicles and Applications

This Denso 3145 spark plug is compatible with multiple makes and models, including but not limited to:

• Audi A4, A4 Quattro, A6 Quattro, Allroad Quattro
• Chevrolet Cruze, Cruze Limited, Sonic, Volt
• Volkswagen Beetle, Golf, GTI, Jetta, Passat, TT, TT Quattro
• Subaru Impreza
• Mercedes-Benz G65 AMG, S600, SL65 AMG

It is designed to address ignition-related issues such as misfires, rough idling, poor fuel economy, and difficulty starting the engine.

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.8 mm before installation for optimal performance.
• Use a 16 mm socket wrench to install or remove the spark plug.
• Apply anti-seize compound on the threads if recommended by the vehicle manufacturer.
• Torque the spark plug to the vehicle manufacturer’s specifications to avoid damage.
• Inspect the spark plug for proper seating and connection after installation.

Quality Assurance and Warranty

Denso spark plugs, including the 3145 model, are manufactured to meet strict quality standards for durability and performance. The use of copper and nickel materials in the electrodes ensures long service life and resistance to wear. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support reliable ignition system operation.