A-Premium Iridium Platinum Spark Plugs for 1.6L L4 Engines, Pack of 4 — Fine-Wire Pre-Gapped 0.031

A-Premium Iridium Platinum Spark Plugs (pack of 4) are precision replacement plugs engineered for 1.6L L4 Hyundai and Kia engines to restore reliable ignition and long service life.

These spark plugs blend an iridium-tipped center electrode with a platinum core to match or exceed OEM performance for select Hyundai and Kia 1.6L L4 models. They arrive as a pack of four, pre-gapped to 0.031 in, and use a fine-wire design for consistent spark delivery and improved combustion stability. Built with resistance for EMI suppression and manufactured to the dimensional specs drivers expect, they simplify servicing while helping maintain smooth starts and steady idle behavior.

Which vehicles and model years do these plugs fit?

These A-Premium plugs are manufactured to fit multiple Hyundai and Kia platforms that use the 1.6L L4 engine. Confirm compatibility with your vehicle by checking the reference numbers and thread/reach specifications against your owner’s manual or existing plug.

• Fits: Hyundai Elantra (2017–2020), Elantra GT (2018–2020), Kona (2018–2020)
• Also fits: Sonata (2015–2019), Tucson (2016–2018), Veloster model years listed
• Kia fits include: Forte (2020), Forte Koup (2017), Forte5 (2017–2018, 2020), Optima (2016–2020), Soul (2017–2019)
• Reference numbers: compatible with 97080, SILZKR8E8G — verify cross-reference before installation

How do these spark plugs improve ignition and drivability?

The iridium center tip and platinum core are chosen for consistent spark formation and improved electrode longevity compared with conventional plugs. That combination helps maintain efficient combustion, smoother idling and dependable cold starts without changing timing or ignition components.

• Iridium tip for sharper, more reliable spark initiation
• Platinum core for wear resistance and extended life
• 5000-ohm resistor to suppress electrical interference with electronics
• Fine-wire electrode for stable flame kernel growth and reduced misfires

What are the key specifications I should check before buying?

Confirm the mechanical dimensions and gap to ensure proper fit and performance in your engine. These plugs are supplied with the listed specs to match OEM fitment and reach for the 1.6L L4 applications noted.

• Gap size: 0.031 inches (pre-set)
• Thread diameter: 12.00 mm; reach: 26.5 mm; insulator height: 51.00 mm
• Hex size: 5/8 inch for standard socket removal/installation
• Resistance: 5000 ohms to reduce radio/ECU noise

How often should I replace these iridium/platinum plugs?

Iridium and platinum electrodes offer longer service life than copper designs, but replacement depends on driving style and conditions. For routine maintenance, follow the manufacturer recommendation range and inspect plugs when performing tune-ups or if drivability changes.

• Typical replacement interval: around 80,000–100,000 miles under normal driving
• Inspect earlier if you notice misfires, rough idle, or decreased fuel efficiency
• Always torque to vehicle specifications and use anti-seize only if specified

Who is this for: These A-Premium Iridium Platinum spark plugs are intended for DIYers and professional technicians who maintain Hyundai and Kia vehicles equipped with the 1.6L L4 engine and need an OEM-equivalent replacement. They suit owners seeking longer service intervals and reliable ignition performance without modifying the engine electronics. Before installing, confirm fitment by comparing the plug’s thread size, reach and gap to your vehicle’s requirements.