Denso 3439 Spark Plug

Reliable Ignition Performance for Chevrolet and Nissan Vehicles

The Denso Iridium Long Life (SIP) spark plug, part number 3439, is engineered to provide consistent ignition and enhanced durability for select Chevrolet and Nissan models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and reliable engine operation.

• Iridium center electrode tip for improved ignition and longevity
• Platinum needle ground electrode tip with needle-to-needle configuration
• Copper core center electrode for optimal conductivity
• Flat seat type with 12.00 mm thread diameter and 26.50 mm reach
• Pre-gap size of 1.1 mm for precise spark delivery
• Hex size of 14.3 mm for standard installation tools
• Manufacturer heat range rating of 20 for balanced thermal performance

Advanced Design Features of the Denso Iridium Long Life (SIP) Spark Plug

The Iridium Long Life (SIP) product line from Denso focuses on durability and consistent ignition performance. This spark plug incorporates an iridium center electrode tip, known for its high melting point and wear resistance, which contributes to longer service intervals. The platinum needle ground electrode tip and needle-to-needle ground configuration enhance spark precision and reduce misfires. The copper core center electrode ensures excellent electrical conductivity, supporting efficient combustion in engines. These features make the Denso 3439 spark plug suitable for maintaining engine performance in Chevrolet Altima, Nissan Sentra, Rogue, Versa, and other compatible models.

Technical Specifications and Compatibility

The Denso 3439 spark plug is compatible with various Chevrolet and Nissan vehicles, including the Altima, City Express, Cube, Kicks, NV200, Rogue, Rogue Select, Sentra, Versa, and Versa Note. Its 12.00 mm thread diameter and 26.50 mm reach fit the engine design requirements of these models. The flat seat type ensures proper sealing and heat dissipation, while the 1.1 mm pre-gap size is optimized for ignition efficiency. The manufacturer heat range of 20 balances heat dissipation and prevents fouling under normal operating conditions.

Common Issues Addressed by the Denso 3439 Spark Plug

• Engine misfires and rough idling
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Increased emissions from inefficient ignition
• Premature spark plug wear affecting engine performance

Installation Notes and Tips

When installing the Denso Iridium Long Life (SIP) spark plug 3439, ensure the spark plug gap is set to the specified 1.1 mm pre-gap size if adjustment is necessary. Use a 14.3 mm socket or wrench for proper torque application. Avoid over-tightening to prevent thread damage. It is recommended to replace spark plugs in sets to maintain balanced engine performance. Always consult the vehicle’s service manual for specific installation procedures and torque specifications.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Iridium Long Life (SIP) spark plug 3439 undergoes rigorous testing for heat resistance, electrical conductivity, and wear. While specific warranty details may vary, Denso products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.