Denso 3459 Spark Plug

Overview of Denso Iridium Long Life (SIP) Spark Plug 3459

The Denso Iridium Long Life (SIP) spark plug, part number 3459, is engineered for reliable ignition performance in select Dodge, Hyundai, Jeep, Ram, and Volvo vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and engine responsiveness.

• Iridium center electrode tip for enhanced durability
• Platinum needle ground electrode tip with needle-to-needle configuration
• Copper core center electrode for optimal conductivity
• Flat seat type with 14.00 mm thread diameter and 26.50 mm reach
• Resistance rating of 5000 ohms to reduce electrical noise
• Pre-gap size of 0.8 mm for consistent spark delivery
• Hex size of 16.0 mm for standard installation tools
• Manufacturer heat range of 20 suitable for various driving conditions

Detailed Product Features and Specifications

This Denso spark plug features an iridium center electrode tip, known for its high melting point and wear resistance, which contributes to longer service life and stable ignition. The ground electrode uses a platinum needle tip arranged in a needle-to-needle configuration, improving spark efficiency and combustion. The center electrode core is made of copper, enhancing thermal conductivity and electrical performance, while the ground electrode core is nickel-based for durability.

The spark plug has a flat seat type ensuring proper sealing in the combustion chamber, with a thread diameter of 14.00 mm and a reach of 26.50 mm to fit specific engine designs. The resistance value of 5000 ohms helps minimize electromagnetic interference with vehicle electronics. A pre-gap size of 0.8 mm is factory set to optimize spark gap for ignition consistency. The hex size of 16.0 mm allows for easy installation using common tools.

About the Iridium Long Life (SIP) Product Line

The Iridium Long Life (SIP) line from Denso focuses on delivering extended durability and consistent ignition performance through the use of iridium and platinum electrode materials. This product line is designed to meet the demands of modern engines requiring precise spark timing and longevity, making it suitable for vehicles like the Dodge Charger, Hyundai Genesis Coupe, Jeep Grand Cherokee, Ram 1500, and Volvo S60 models.

Compatible Vehicles and Applications

• Dodge 1500, Challenger, Charger, Durango
• Hyundai Genesis Coupe
• Jeep Grand Cherokee
• Ram 1500
• Volvo S60, S60 Cross Country, S80, V60, V60 Cross Country, XC60, XC70

Common Issues Addressed by This Spark Plug

• Engine misfires and rough idling
• Poor fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Reduced engine power and acceleration
• Increased emissions from inefficient ignition

Installation Notes and Tips

Ensure the engine is cool before removing old spark plugs. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid damage. Verify the pre-gap size of 0.8 mm before installation, adjusting if necessary. The 16.0 mm hex size allows for standard spark plug sockets. Inspect the spark plug threads and seat for proper fitment in the combustion chamber.

Quality Assurance and Warranty

Denso manufactures this spark plug to meet OEM standards for fit, form, and function. The use of iridium and platinum materials supports long service life and consistent performance. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.