NGK 94124 Spark Plug

NGK Laser Iridium Spark Plug for Mazda and Toyota

NGK 94124 is a Laser Iridium spark plug built for direct-fit service on a wide range of Mazda, Toyota, and Scion applications. It combines an iridium center electrode tip with a nickel ground electrode design to support consistent ignition performance and OE-style service intervals.

The NGK Laser Iridium Spark Plug line is positioned for drivers who want an OE-matched replacement with the durability and precision expected from an original equipment supplier. Part number 94124 is specified for many Mazda 3, CX-5, MX-5 Miata, and Toyota Yaris applications, including vehicles with factory-recommended 75,000-mile service intervals.

Key Features

• NGK Laser Iridium Spark Plug, part number 94124
• Iridium center electrode tip for stable spark delivery
• Nickel ground electrode with standard configuration
• Flat seat design with 12 mm thread diameter and 14 mm hex
• Pre-gapped at 0.044 in. for many Mazda applications
• 5000 ohm resistance and non-removable nut terminal
• OE-style replacement for Mazda, Toyota, and Scion vehicles

Detailed Description

NGK 94124 is engineered as a Laser Iridium spark plug for secondary ignition service where OE fit, heat range, and electrode construction matter. The copper core supports heat transfer, while the iridium tip helps maintain precise ignition performance over extended service intervals. This plug uses a flat seat, 26.5 mm reach, and heat range 7 specification, making it a direct replacement for many factory-equipped engines.

Compatible With 2021-2024 Mazda 3, 2021-2024 Mazda 3 Sport, 2021-2024 Mazda CX-30, 2023-2024 Mazda CX-50, 2024 Mazda CX-90, 2021-2023 Mazda CX-5, 2021-2023 Mazda MX-5 Miata, 2021-2022 Mazda CX-3, 2021 Mazda 6, 2014-2020 Mazda 3, 2014-2020 Mazda 3 Sport, 2014-2020 Mazda 6, 2016-2020 Mazda CX-3, 2020 Mazda CX-30, 2013-2020 Mazda CX-5, 2016-2020 Mazda MX-5 Miata, 2016-2020 Toyota Yaris, 2017-2018 Toyota Yaris iA, 2016 Scion iA, 2012-2013 Mazda 3, and 2011-2013 Mazda 3 Sport. This part cross-references AMS Automotive 4711 and Anchor 9683 for the same application.

Common Uses

• Misfire diagnosis tied to worn or fouled spark plugs
• Hard starting or extended crank conditions
• Rough idle and inconsistent combustion
• Reduced fuel economy from aged ignition components
• Restoring factory service interval performance on Mazda and Toyota engines

Installation Notes and Tips

Verify engine application, thread reach, seat type, and gap before installation. For Mazda applications listed with a 0.044 in. gap, confirm the plug matches the vehicle’s OE specification before use. Inspect ignition coils and boots during service, and replace plugs on a cool engine to reduce the risk of thread damage.

Quality Assurance

NGK is a long-established OE supplier with North American manufacturing and distribution support, and this spark plug is built to original equipment standards for durability and operational performance. Part number 94124 reflects NGK’s OE-focused engineering for modern Mazda, Toyota, and Scion ignition systems.