NGK 93815 Spark Plug

NGK Laser Iridium Spark Plug for OE Ignitability

NGK 93815 is a Laser Iridium High Ignitability spark plug built for direct OE-style service on select Hyundai and Kia engines. It combines an iridium center electrode with a square platinum ground electrode tip design to support consistent ignition performance, stable combustion, and long service intervals.

For drivers searching for an NGK spark plug for 2012-2019 Kia Soul, 2012-2017 Hyundai Veloster, or 2015-2019 Kia Rio, this part number 93815 matches the OE high ignitability specification used in those applications.

Key Features

• Laser Iridium High Ignitability design for OE-style ignition performance
• Iridium center electrode tip material for durable spark delivery
• Square platinum electrode ground tip design for high ignitability
• 0.040 in. pre-gap size for listed applications
• 5,000 ohm resistance
• Flat seat, 12 mm thread diameter, 5/8 hex size
• Copper center electrode core with nickel ground electrode core

Product Details

NGK 93815, also identified by part number SILZKR6B10E, is part of NGK’s Laser Iridium High Ignitability line. NGK is a long-standing OE supplier in North America, and this spark plug reflects that OE-focused approach with materials and dimensions selected for factory-style fit and performance. The design uses an iridium center electrode and a platinum-tipped ground electrode to support reliable ignition in modern compact engines.

This spark plug is listed for 2012-2019 Kia Soul, 2015-2019 Kia Rio, 2012-2017 Hyundai Veloster, and select Hyundai Accent applications, including 2012-2013, 2014-2017, and 2018-2019 model years. It is also a direct reference for shoppers looking up NGK 93815 or SILZKR6B10E for OE replacement service.

This part cross-references Autolite XP6203 and DENSO Auto Parts 5354 for the same application.

What It Helps Address

• Hard starting caused by worn spark plug electrodes
• Misfire conditions related to weak or inconsistent spark
• Rough idle in high-mileage Hyundai Accent, Kia Rio, Kia Soul, or Hyundai Veloster engines
• Reduced fuel efficiency from degraded ignition performance
• Service replacement for OE high ignitability spark plug intervals

Installation Notes and Tips

Verify the engine application against the vehicle’s OE spark plug specification before installation. This plug is listed with a 0.040 in. gap and a flat seat, so confirm the engine calls for those dimensions and do not assume a universal gap setting. Use proper spark plug removal and installation procedures to avoid thread damage in the cylinder head.

For Hyundai Accent, Kia Rio, Kia Soul, and Hyundai Veloster applications, match the OE high ignitability requirement and inspect ignition components during service to help maintain consistent performance.

Quality Assurance

NGK manufactures spark plugs as an OE supplier with extensive coverage across domestic and import vehicle applications. Part number 93815 is built to OE standards for durability and operational performance in the listed fitments.