Denso 4117 Spark Plug

Reliable Ignition Performance with Denso U-Groove Conventional Spark Plug

The Denso 4117 spark plug is engineered to deliver consistent ignition performance for a variety of vehicles. Featuring a U-groove ground electrode tip design and durable materials, this spark plug supports efficient combustion and reliable engine operation.

• U-groove ground electrode tip for improved spark exposure
• Nickel ground electrode core and tip for durability
• Copper center electrode core for optimal conductivity
• Standard ground configuration with a single ground electrode
• Flat seat type with 22mm reach and 12mm thread diameter
• Pre-gap size of 0.7mm for precise ignition timing
• Hex size of 18mm for easy installation
• Manufacturer heat range of 27 suitable for various engine conditions
• Resistance of 5000 ohms to reduce electrical noise interference

About the Denso U-Groove Conventional Product Line

The U-Groove Conventional line by Denso focuses on spark plugs with a unique U-shaped groove on the ground electrode tip. This design increases the spark exposure area, which can enhance ignition efficiency and combustion stability. The conventional construction uses reliable materials such as nickel and copper to balance durability and conductivity, making it suitable for many standard ignition systems.

Technical Details and Application

The Denso 4117 spark plug features a nickel ground electrode core and tip, providing resistance to wear and corrosion. The copper center electrode core ensures excellent electrical conductivity, supporting consistent spark generation. With a pre-gap size of 0.7mm and a flat seat type, this spark plug is designed for precise fitment and optimal combustion chamber sealing. The 22mm reach and 12mm thread diameter make it compatible with a range of vehicle engines requiring these specifications.

Common Issues Addressed by Denso 4117 Spark Plug

• Misfiring or inconsistent engine ignition
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Engine hesitation or rough idling
• Electrical interference affecting onboard electronics

Installation Notes and Tips

Ensure the spark plug gap is set to 0.7mm before installation if adjustment is necessary. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid damage to the threads or improper sealing. The 18mm hex size allows for standard spark plug socket compatibility. Verify compatibility with your vehicle’s make and model based on thread diameter and reach to ensure proper fitment.

Quality Assurance and Warranty

Denso spark plugs, including the 4117 part number, are manufactured to meet strict quality standards for durability and performance. The materials used, such as nickel and copper, are selected for their proven reliability in ignition components. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles.