A-Premium Double Iridium Spark Plugs Pack of 4 for 2.4L L4 Engines — Fine Wire, Long-Life Ignition

A-Premium Double Iridium Spark Plugs are fine-wire, long-life ignition plugs engineered for 2.4L L4 engines to deliver consistent spark performance and extended service intervals.

These four double-iridium spark plugs are built to meet OEM-style fit and function for many Hyundai and Kia 2.4L L4 applications. With an iridium center electrode, platinum core, 0.044-inch gap and a 5,000-ohm resistor, they balance reliable ignitability, reduced electrode wear and radio-frequency interference suppression. The plugs are supplied as a pack of four and match reference numbers such as 93199 and DILKR6C11, making them a direct replacement option for routine maintenance or mid-life engine tune-ups.

How do these spark plugs improve start-up and throttle response?

Double iridium construction creates a sharper, more focused spark compared with conventional nickel plugs, which helps more complete combustion and steadier ignition across load ranges. That sharper spark reduces misfires and can make throttle transitions feel smoother.

• Iridium fine-wire center electrode for concentrated spark energy
• Platinum core for structural stability and extended wear resistance
• 0.044 in factory gap to optimize ignition timing and combustion
• 5,000-ohm resistor to limit electrical interference with onboard electronics

Are these plugs compatible with my vehicle model years?

These A-Premium plugs are specified for a range of Hyundai and Kia 2.4L L4 models. Always cross-check the reference numbers and thread/reach dimensions against your vehicle’s service manual or OEM part listing before purchase.

• Compatible models include Hyundai Sonata (2011–2014) and Santa Fe Sport (2013–2015)
• Also fits Hyundai Tucson (2014–2015) and several Kia models, including Optima (2011–2015)
• Reference numbers: 93199, DILKR6C11 — verify against your vehicle spec
• Thread diameter 12.00 mm and reach 26.5 mm for proper fitment in listed engines

What are the technical specifications I should know before installing?

The plugs combine high-durability materials and common spark-plug dimensions so they can be installed with standard tools and torque values recommended for your engine. Retaining the correct gap, hex size, and insulator height is critical to ensure proper seating and heat dissipation.

• Center electrode tip: iridium; center electrode core: platinum
• Gap size: 0.044 inches; hex size: 5/8 inch for socket fit
• Insulator height: 51.00 mm; reach: 26.5 mm; thread diameter: 12.00 mm
• Electrical resistance: 5,000 ohms to reduce radio-frequency interference

When should double-iridium plugs be replaced?

Double-iridium plugs are designed for long service life compared with conventional plugs. Manufacturer guidance and typical aftermarket recommendations suggest extended replacement intervals, but actual lifespan depends on driving conditions and engine condition.

• Recommended replacement interval range: 100,000–120,000 miles for optimal longevity
• Inspect earlier if you experience misfires, rough idle, or increased fuel consumption
• Replace as a full set for consistent combustion across cylinders

Who is this for: These A-Premium double iridium spark plugs are aimed at DIY mechanics, independent technicians and vehicle owners with Hyundai or Kia 2.4L L4 engines seeking an OEM-fit, long-life ignition upgrade. They suit anyone looking for a plug that balances durable materials, resistance to wear and interference suppression while keeping replacement intervals long and maintenance straightforward.