NGK 94051 Spark Plug

NGK Laser Iridium Spark Plug for OE-Style Ignition

NGK 94051 is a Laser Iridium High Ignitability spark plug built for direct replacement service on select Chevrolet Spark and Chevrolet Volt applications. It combines an iridium center electrode with a high-ignitability square platinum ground electrode design to support consistent spark delivery and OE-style performance.

Key Features

• Laser Iridium center electrode for precise ignition performance
• Square platinum ground electrode with high ignitability design
• 0.036 in pre-gap for listed OE applications
• 12 mm thread diameter, 14 mm hex size, tapered seat
• 5000 ohm resistance and non-removable nut terminal
• NGK part number 94051 / stock number 94051

Product Details

The NGK Laser Iridium High Ignitability Spark Plug is engineered around OE service requirements for modern small-displacement and hybrid powertrains. The iridium center electrode helps maintain stable ignition characteristics, while the nickel-core ground electrode and high-ignitability tip design support efficient combustion under factory-specified conditions. This NGK 94051 spark plug is listed for 2016-2022 Chevrolet Spark and 2016-2019 Chevrolet Volt applications, including models with a 0.036 in gap and OE-equivalent design notes. For buyers searching for a Chevrolet Spark spark plug or Chevrolet Volt spark plug replacement, this part number provides a direct OE-style service option.

NGK’s OE manufacturing background and broad North American coverage make this a practical choice for routine ignition service where factory specifications matter. This part cross-references GM 12637197 for the same application.

Common Issues This Part Can Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent ignition output
• Misfire codes related to plug wear or gap growth
• Reduced throttle response from degraded spark quality
• Service interval replacement on listed Chevrolet Spark and Chevrolet Volt models

Installation Notes and Tips

Verify engine application, year, and OE gap specification before installation. The listed pre-gap is 0.036 in, and the tapered seat design should match the cylinder head specification. Use proper spark plug removal and torque procedures to avoid thread or insulator damage. On vehicles with coil-on-plug ignition, inspect the coil boots and seals during service.

Quality Assurance

NGK is a long-established OE spark plug supplier with manufacturing and distribution operations supporting domestic and import vehicle coverage in North America. Part number 94051 is built to OE-style standards for the listed applications and service intervals.