NGK 94489 Spark Plug

NGK Laser Iridium Spark Plug 94489

NGK 94489 is a Laser Iridium spark plug built for OE-style ignition performance in a wide range of GM applications. It uses an iridium center electrode tip, copper core materials, and a tapered seat design to support consistent combustion and stable ignition response.

Compatible With Chevrolet Camaro, Malibu, Equinox, Traverse, GMC Terrain, Buick Envision, Regal, Regal Sportback, Regal TourX, and Cadillac ATS, CTS, and CT6 applications that call for this NGK Laser Iridium Spark Plug. The 94489 part number is also listed under NGK ILTR6M9G.

Key Features

• Laser Iridium spark plug with an iridium center electrode tip for precise spark delivery
• Copper core center and ground electrode materials for efficient heat transfer
• Standard ground electrode configuration with a single ground electrode
• Pre-gapped at .032 inch with a 5,000 ohm resistor
• Tapered seat design, 14 mm thread diameter, 25.00 mm reach, and 5/8 hex size
• Manufacturer heat range 6 for OE-style thermal control
• Non-removable nut terminal for common ignition wire and coil connections

Product Details

NGK is a major OE spark plug supplier in North America, and this Laser Iridium design reflects that background with a focus on durability, stable operation, and original-equipment standards. Part number 94489 is engineered for vehicles that specify this plug style and gap, including 2021-2023 Chevrolet Camaro, 2021-2022 Chevrolet Malibu, 2018-2020 Chevrolet Equinox, 2018-2019 Chevrolet Traverse, 2018-2020 GMC Terrain, and select Buick and Cadillac models from 2013-2020. This part cross-references Bosch 96315 for the same application.

Common Issues This Plug Can Address

• Rough idle caused by worn or fouled spark plugs
• Hard starting from weak or inconsistent spark output
• Misfire conditions related to plug wear or incorrect gap
• Reduced throttle response from degraded ignition performance
• Fuel economy loss tied to inefficient combustion

Installation Notes and Tips

Verify engine application, thread size, seat type, and gap before installation. This plug is pre-gapped at .032 inch, but always confirm the specification against the vehicle service information for the exact engine code. Use proper spark plug removal and installation procedures to avoid thread damage in the cylinder head, and inspect ignition coils and boots during service.

Quality Assurance

NGK manufactures spark plugs to OE standards and supports a broad range of domestic and import vehicle applications. The 94489 Laser Iridium spark plug is built for durability and consistent performance in service intervals commonly specified by the vehicle manufacturer.