NGK 90219 Spark Plug

NGK Laser Iridium Spark Plug 90219 Overview

NGK 90219 is a Laser Iridium spark plug built for precise ignition performance in select Jeep, Dodge, and Wrangler applications. It combines an iridium center electrode tip with a standard ground electrode layout to support stable spark delivery and OE-style service intervals.

As part of NGK’s Laser Iridium Spark Plug line, this plug reflects the brand’s OE supplier background and focus on original equipment standards for durability and consistent operation. It is a direct replacement choice for drivers searching for an NGK 90219 spark plug for Jeep Grand Cherokee, Jeep Wrangler, Jeep Cherokee, Jeep Compass, or Dodge Hornet service.

Key Features

• Laser Iridium spark plug with iridium center electrode tip material
• 5000 ohm resistor design for ignition system compatibility
• Standard ground electrode configuration with copper core materials
• 0.026 in pre-gap size for listed OE applications
• 12 mm thread diameter, 5/8 in hex size, and flat seat design
• Heat range 7 with 26.5 mm reach
• NGK part number 90219, also identified as ILZKR7G7G

Detailed Description

NGK 90219 is engineered as a Laser Iridium spark plug for modern gasoline engines that call for a fine-wire iridium firing tip and OE-style dimensions. The iridium center electrode helps maintain consistent spark characteristics, while the standard ground electrode design and copper core construction support dependable ignition performance in the specified vehicle applications. This plug is listed for 2021-2024 Jeep Wrangler, 2021-2023 Jeep Cherokee, 2022-2025 Jeep Grand Cherokee, 2023-2024 Jeep Compass, 2023-2025 Dodge Hornet, and select 2018-2020 Jeep Wrangler and 2019-2020 Jeep Cherokee applications. If you need an NGK 90219 replacement for Jeep Grand Cherokee or a Laser Iridium spark plug for Jeep Wrangler service, this part matches the published fitment data.

This part cross-references NGK 90219 for the same application.

Common Uses

• Restoring weak or inconsistent spark in listed Jeep and Dodge applications
• Replacing worn plugs during scheduled maintenance intervals
• Addressing rough idle caused by aged or fouled spark plugs
• Helping correct hard starting related to ignition wear
• Supporting misfire diagnosis when plug condition is out of spec

Installation Notes and Tips

Verify the engine application and service interval before installation. Confirm the specified 0.026 in gap where listed in the fitment notes, and inspect the ignition system for oil contamination, carbon tracking, or coil-related faults before installing new plugs. Use the correct torque procedure for the engine and avoid over-tightening the 12 mm flat-seat plug.

Quality Assurance

NGK is a long-established OE supplier and manufacturer with North American and global production and distribution support. The brand’s focus on original equipment standards and broad vehicle coverage makes NGK 90219 a technical replacement option for factory-specified ignition service.