Denso 3458 Spark Plug

Denso Iridium Long Life Spark Plug

Denso 3458 is an Iridium Long Life spark plug built for OE-level performance, durability, and emissions control. It is a direct-fit ignition component for select Hyundai and Kia applications, including Hyundai Tucson, Santa Fe, and Sonata, plus Kia Forte, Forte Koup, Sorento, Sportage, Optima, and Rondo.

The Iridium Long Life (SIP) line focuses on stable ignition performance with a fine iridium center electrode, platinum needle ground tip, and a needle-to-needle ground configuration. Denso 3458 is a practical choice for drivers looking for a spark plug that matches factory-style specifications in the ignition system.

Key Features

• Iridium center electrode tip material for consistent spark performance
• Platinum needle ground electrode tip design
• Needle-to-needle ground configuration
• Copper center electrode core and nickel ground electrode core
• Pre-gapped at 1.1 mm
• 5000 ohm resistance
• 14.00 mm thread diameter, 26.50 mm reach, 16.0 mm hex size
• Flat seat design for OE-style cylinder head fitment

Product Details

Denso 3458 is engineered as an OE-style replacement spark plug for select Hyundai and Kia vehicles. The iridium center electrode supports precise ignition, while the platinum needle ground tip and needle-to-needle layout are designed to maintain stable firing characteristics under normal engine operating conditions. This spark plug cross-references Denso Auto Parts FK16HQR11 and Hyundai 18845-11160 for the same application.

Compatible With 2010-2013 Hyundai Tucson, 2010-2012 Hyundai Santa Fe, 2009-2010 Hyundai Sonata, 2010-2013 Kia Forte, 2011-2013 Kia Forte Koup, 2011-2013 Kia Sorento, 2011-2013 Kia Sportage, 2010 Kia Optima, and 2009-2010 Kia Rondo. Denso 3458 is a fitment-focused ignition part for owners maintaining factory-style performance on these vehicles.

What It Helps Address

• Engine misfire caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Rough idle related to inconsistent spark delivery
• Reduced fuel economy from degraded ignition efficiency
• Loss of throttle response from aged secondary ignition components

Installation Notes

Verify thread diameter, reach, seat type, and heat range before installation. Use the specified gap setting if your application requires adjustment, and follow the vehicle service manual for torque and replacement intervals. Confirm the correct application by model year before ordering, especially for Hyundai Tucson, Kia Forte, and Kia Sorento fitments.

Quality Assurance

Denso manufactures this spark plug to OE performance, durability, and emissions standards for factory-style service replacement.