Denso 3168 Spark Plug

Reliable Ignition Performance for Select Vehicle Models

The Denso Double Platinum 3168 spark plug is engineered to provide consistent ignition and efficient combustion for a wide range of vehicles including Chevrolet, Honda, Subaru, and Volvo models. 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 spark
• 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 efficient heat dissipation
• 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 for optimal spark gap
• Hex size of 16.0 mm for easy installation
• Manufacturer heat range rating of 20 suitable for various driving conditions

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 enhances electrode longevity and maintains consistent spark performance over time. The 3168 part number benefits from this technology, offering reliable ignition for vehicles such as the Mazda MX-6, Nissan 300ZX, and Subaru Impreza, where precise ignition timing and durability are critical.

Technical Details and Compatibility

The Denso 3168 spark plug incorporates a copper core center electrode with a platinum tip, which improves thermal conductivity and wear resistance. The ground electrode uses a nickel core with a platinum chip tip, providing a stable spark and extended service life. With a 14mm thread diameter, 19mm reach, and flat seat design, this spark plug is compatible with various models from Chevrolet, Chrysler, Dodge, Geo, Honda, Hyundai, Isuzu, Kia, Mazda, Mitsubishi, Nissan, Saab, Subaru, Suzuki, and Volvo. Notable compatible models include the Chevrolet Aveo, Honda Civic, Subaru Forester, and Volvo S60.

Common Applications and Issues Addressed

• Restores engine misfire issues caused by worn or fouled spark plugs
• Improves cold start performance in vehicles like the Mazda Miata and Nissan 300ZX
• Reduces ignition system electrical interference with 5000 ohm resistance
• Enhances fuel efficiency and smooth engine operation in models such as the Subaru Outback and Kia Sportage
• Prevents electrode wear and maintains consistent spark gap over time

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage
• Check and adjust the pre-gap to 1.1 mm if necessary before installation
• Inspect ignition wires and coils for wear when replacing spark plugs
• Replace spark plugs at recommended service intervals for optimal performance

Quality Assurance and Warranty

Denso spark plugs, including the Double Platinum 3168, are manufactured to meet strict quality standards ensuring reliable ignition performance. The use of premium materials such as platinum and copper core electrodes contributes to durability and consistent operation. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles.