Original OE Number: 18871-11070 Compatible Model: SILZKR7K11S Suitable Original Factory Vehicles: Hyundai Sonata, Tucson, Elantra, Kona; Kia Seltos, K5, Sportage (2020-2026) Suitable Engine Models: 2.

Modern Kia Iridium Spark Plugs 18871-11070 SILZKR7K11S OE Replacement Parts
Product Details
This iridium spark plug is a core component of the engine ignition system, generating an electric spark to ignite the air-fuel mixture in the cylinder, ensuring stable engine ignition and complete combustion.
Original Equipment (OE) Number: 18871-11070
Compatible Model: SILZKR7K11S
Suitable Original Vehicles: Hyundai Sonata, Tucson, Elantra, Kona; Kia Seltos, K5, Sportage (2020-2026)
Suitable Engine Models: 2.0L / 2.5L Naturally Aspirated Engines
The product features an iridium electrode, offering sensitive ignition response, high-temperature resistance, anti-carbon buildup, and long service life. The high-aluminum ceramic insulator provides stable insulation performance, standard thread precision, and excellent heat dissipation. It can effectively improve issues such as idle vibration, difficult cold start, acceleration hesitation, high fuel consumption, insufficient power, and misfiring. It matches the original factory specifications and supports direct replacement in the original vehicle.
It is recommended to replace spark plugs in sets. After installation, check the ignition gap to optimize engine combustion efficiency.
Product Specifications
OE Original Number: 18871-11070
Compatible Model: SILZKR7K11S
Product Name: Iridium Spark Plug
Suitable Vehicles: Hyundai Sonata, Tucson, Elantra, Kona; Kia Seltos, K5, Sportage 2020-2026
Suitable Engines: 2.0L, 2.5L Naturally Aspirated Engines
Material: Iridium Electrode, High-Aluminum Ceramic Insulator, Nickel Alloy Shell
Quality Standard: OE Original Specifications, Direct Original Vehicle Replacement
Product Advantages
✅ Matches OE original number, with thread size, hex specification, and ignition gap consistent with the original vehicle, no modification required
✅ Iridium electrode ensures sensitive ignition, smooth cold start, and enhanced engine power response
✅ Heat-resistant and less prone to carbon buildup, long-lasting and durable, helping to reduce fuel consumption
✅ Stable ceramic insulation prevents leakage and misfiring, ensuring reliable ignition