Denso 3417 Spark Plug

Reliable Ignition Performance for Select Vehicles

The Denso Iridium Long Life 3417 spark plug is engineered to provide consistent ignition and durability for a range of vehicles including Toyota Camry, Nissan Altima, Jeep Grand Cherokee, and Ram 1500. Designed with advanced materials, this spark plug supports efficient combustion and long service intervals.

• Iridium center electrode tip for enhanced durability and ignition
• Platinum chip ground electrode tip for stable spark and wear resistance
• Copper core center electrode for optimal conductivity
• Standard ground configuration with nickel ground electrode core
• Pre-gap size of 1.1 mm for precise spark gap
• Flat seat type with 14 mm thread diameter and 26.5 mm reach
• Hex size of 16.0 mm for easy installation
• Manufacturer heat range rating of 16

About the Denso Iridium Long Life Spark Plug Line

The Iridium Long Life product line from Denso focuses on delivering extended durability and reliable ignition performance. Featuring iridium-tipped center electrodes, these spark plugs are designed to maintain stable spark delivery over longer periods compared to conventional plugs. The combination of iridium and platinum chip technology in the 3417 model helps reduce electrode wear and supports consistent engine operation across various driving conditions.

Technical Details and Compatibility

The Denso 3417 spark plug incorporates a copper core center electrode to maximize electrical conductivity, paired with an iridium tip that withstands high temperatures and erosion. The ground electrode uses a platinum chip tip and nickel core, providing a balance of durability and performance. With a pre-gap size of 1.1 mm and a flat seat design, this spark plug fits securely in engines requiring a 14 mm thread diameter and 26.5 mm reach. Compatible with multiple makes and models such as Chrysler 300, Dodge Charger, Hyundai Santa Fe, Infiniti G35, Kia Optima, Scion tC, Suzuki SX4, and Toyota 4Runner, this spark plug supports a wide range of secondary ignition needs.

Common Applications and Issues Addressed

• Replacement for worn or fouled spark plugs causing misfires
• Improves ignition stability in vehicles experiencing rough idling
• Helps restore fuel efficiency by ensuring proper combustion
• Reduces engine hesitation during acceleration
• Supports consistent engine start-up performance

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 1.1 mm if not pre-gapped. Use a 16 mm socket wrench for proper torque application to avoid damage to the flat seat. Ensure the thread diameter of 14 mm and reach of 26.5 mm match the engine specifications. It is recommended to replace spark plugs in sets to maintain balanced engine performance. Avoid over-tightening to prevent thread damage.

Quality Assurance and Warranty

Denso spark plugs, including the Iridium Long Life 3417, are manufactured to meet OEM standards for fit, form, and function. The use of high-quality materials such as iridium and platinum chip electrodes ensures durability and consistent performance. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support reliable operation in compatible vehicles.