Denso 3490 Spark Plug

Denso Iridium Long Life Spark Plug for Nissan

The Denso Iridium Long Life (SIP) spark plug is built for OE-level performance, durability, and emissions control in secondary ignition systems. This Denso 3490 spark plug is a direct-fit choice for select Nissan Rogue and Nissan Altima applications, including 2017-2020 Nissan Rogue and 2017-2018 Nissan Altima OE service needs.

Key Features

• Iridium center electrode tip for stable ignition performance
• Platinum needle ground electrode tip design with needle-to-needle configuration
• Copper center electrode core and nickel ground electrode core for reliable heat transfer
• 5000 ohm resistance for proper ignition circuit operation
• Pre-gapped to 1.1 mm for OE-style service fitment
• Flat seat design, 12.00 mm thread diameter, 28.50 mm reach, and 14.3 mm hex size
• Manufactured to meet strict OE performance, durability, and emissions standards

Product Details

Denso Iridium Long Life (SIP) plugs are engineered as OE-style replacement spark plugs for modern Nissan engines that require precise ignition control. The iridium tip supports consistent spark delivery, while the platinum needle ground design helps maintain electrode stability over long service intervals. This part number 3490 is also referenced as Denso FXE20HE11C and cross-references Datsun/Nissan 22401-1HC1B and 22401-3TA1B for the same application.

Compatible With 2017-2020 Nissan Rogue and 2017-2018 Nissan Altima, this spark plug supports factory-style ignition performance for vehicles that call for the Iridium Long Life (SIP) design. The Denso 3490 is a practical OE replacement when you need the correct thread size, reach, seat type, and heat range for specified Nissan applications.

Common Issues This Part Can Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Misfire conditions related to aged secondary ignition components
• Reduced fuel economy from inconsistent spark delivery
• Emissions concerns tied to degraded spark plug performance

Installation Notes and Tips

Verify engine application by year, make, and model before installation. Confirm the flat seat design, 12.00 mm thread diameter, 28.50 mm reach, and 1.1 mm pre-gap match the original specification for your Nissan Rogue or Nissan Altima. Use proper spark plug service procedures and torque to the vehicle manufacturer’s specification to protect the cylinder head and ensure correct sealing.

Quality Assurance

Denso manufactures this spark plug to OE performance, durability, and emissions standards for consistent service quality in approved applications. The Iridium Long Life (SIP) product line is designed for precise ignition performance in modern Nissan engines that require long-life spark plug construction.