Denso 3492 Spark Plug

Overview of Denso Iridium Long Life (SIP) Spark Plug 3492

The Denso Iridium Long Life (SIP) spark plug, part number 3492, is engineered for reliable ignition performance in select Acura and Honda vehicles. Designed to meet the specific needs of models like the Accord, Civic, CR-V, HR-V, ILX, and TLX, 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 materials in both center and ground electrodes for optimal conductivity
• Pre-gap size of 1.1 mm for precise spark delivery
• Flat seat type with 26.50 mm reach and 12.00 mm thread diameter
• Heat range rating of 22 suitable for specified vehicle applications
• Hex size of 14.3 mm for standard installation tools
• Resistance value of 5000 ohms to reduce electrical noise

Detailed 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 consistent ignition. The ground electrode uses a platinum needle tip arranged in a needle-to-needle configuration, improving spark efficiency and combustion stability. Both the center and ground electrodes have copper cores, enhancing thermal conductivity and electrical performance. The pre-gap size of 1.1 mm is factory set to optimize spark timing and combustion in compatible Acura and Honda engines.

The spark plug’s flat seat design ensures a secure fit and proper sealing within the combustion chamber. With a reach of 26.50 mm and a thread diameter of 12.00 mm, it matches the specifications required for the listed vehicle models. The heat range of 22 is calibrated to handle the thermal demands of these engines, balancing heat dissipation and preventing fouling. Additionally, the 5000 ohm resistance helps minimize radio frequency interference with onboard electronics.

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 advanced electrode materials and precise manufacturing. This product line incorporates iridium and platinum electrode tips combined with copper cores to optimize conductivity and wear resistance. The design supports longer service intervals and stable engine operation, making it suitable for modern Acura and Honda vehicles requiring reliable secondary ignition components.

Compatible Vehicles and Common Applications

• Replacement spark plug for Acura Accord, ILX, and TLX models
• Suitable for Honda Civic, CR-V, and HR-V engines
• Addresses issues such as misfires, rough idling, and poor fuel economy
• Helps restore smooth acceleration and stable engine performance
• Used in routine maintenance to maintain ignition system efficiency

Installation Notes and Tips

• Ensure the engine is cool before removing old spark plugs
• Use a 14.3 mm socket wrench for proper installation torque
• Verify the pre-gap size of 1.1 mm before installation, adjusting only if necessary
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Tighten to manufacturer-specified torque to avoid damage or leaks

Quality Assurance and Warranty

Denso spark plugs, including part number 3492, are manufactured to meet strict quality standards for fit, form, and function. The use of premium materials such as iridium and platinum ensures durability and consistent performance. While specific warranty terms may vary, Denso products typically come with manufacturer-backed coverage against defects in materials and workmanship. Consult vehicle and product documentation for detailed warranty information.