NGK 94374 Spark Plug

NGK Iridium IX Spark Plug 94374

NGK Iridium IX Spark Plug 94374 is built for direct ignition service in a wide range of Ford, Lincoln, Chevrolet, Buick, Cadillac, GMC, Jaguar, Land Rover, and Mazda applications. With an iridium center electrode, copper core, and a 0.032 in. pre-gap, it is specified for many late-model turbocharged and naturally aspirated engines that call for precise spark control.

The Iridium IX line focuses on stable ignition performance and long-term durability in demanding daily-driver and performance use. Part number 94374 uses a tapered seat, 14 mm thread diameter, 5/8 in. hex, 5000 ohm resistance, and a taper-cut ground electrode design for consistent firing characteristics.

Key Features

• Iridium center electrode tip for precise spark delivery
• Copper core center electrode for efficient heat transfer
• Taper-cut ground electrode design with one ground electrode
• Pre-gapped to 0.032 in. for many Ford and Lincoln applications
• 5000 ohm resistance for ignition system noise control
• Tapered seat, 14 mm thread diameter, 5/8 in. hex
• NGK part number 94374 / LTR6IX

Detailed Description

NGK 94374 is an Iridium IX spark plug engineered for vehicles that require a tapered-seat plug with a 0.032 in. gap specification. It is listed for applications such as the Ford F-150, Ford Explorer, Ford Bronco, Ford Ranger, Lincoln Aviator, Lincoln Navigator, Chevrolet Camaro, and Chevrolet Malibu, along with additional Ford, Lincoln, Buick, Cadillac, GMC, Jaguar, Land Rover, and Mazda models. The iridium tip supports consistent ignition performance, while the nickel ground electrode and taper-cut design help maintain reliable spark under varied operating conditions.

NGK is a major OE spark plug supplier in North America with decades of automotive manufacturing experience. This part cross-references NGK 94374 for the same application.

What It Helps Address

• Misfires caused by worn or eroded spark plug electrodes
• Hard starting from weak or inconsistent spark output
• Rough idle and hesitation under acceleration
• Reduced throttle response from degraded ignition performance
• Service replacement needs on vehicles calling for a 0.032 in. gap

Installation Notes and Tips

Verify engine-specific fitment before installation, since gap requirements vary by vehicle and model year. Confirm the tapered seat design, 14 mm thread diameter, and 0.032 in. pre-gap match the engine specification. Use proper spark plug service procedures and torque to the vehicle manufacturer’s specification. For vehicles listed with gap adjustment notes, set the plug to the required gap before installation.

Quality Assurance

NGK manufactures spark plugs for a broad range of domestic and import vehicles and supplies OE-level ignition components for automotive, motorcycle, marine, and small engine applications. Part number 94374 is built to NGK’s original-equipment standards for durability and operational performance.

Compatible With 2021-2025 Ford Bronco, 2020-2025 Ford Explorer, 2020-2025 Ford F-150, 2020-2025 Ford Ranger, 2021-2024 Ford Bronco Sport, 2021-2024 Ford Edge, 2020-2024 Ford Transit-150, 2020-2024 Ford Transit-250, 2020-2024 Ford Transit-350, 2020-2024 Ford Transit-350 HD, 2020-2024 Lincoln Aviator, 2021-2023 Chevrolet Camaro, 2022-2023 Ford Mustang, 2022-2023 Ford Transit Connect, 2022-2023 Lincoln Nautilus, 2021-2022 Chevrolet Malibu, 2021-2022 Ford EcoSport, 2022 Ford Escape, 2017-2022 Ford GT, 2020-2022 Lincoln Corsair, 2013-2021 Ford Escape, 2020-2021 Ford Expedition, 2015-2021 Ford Mustang, 2019-2021 Ford Transit Connect, 2019-2021 Lincoln Nautilus, 2020-2021 Lincoln Navigator, 2016-2020 Buick Envision, 2018-2020 Buick Regal Sportback, 2018-2020 Buick Regal TourX, 2016-2020 Chevrolet Camaro, 2018-2020 Chevrolet Equinox, 2017-2020 Chevrolet Malibu, 2013-2015 Chevrolet Malibu, 2018-2020 Ford EcoSport, 2012-2020 Ford Edge, 2013-2020 Ford Fusion, 2018-2020 GMC Terrain, 2017-2020 Lincoln Continental, 2013-2020 Lincoln MKZ, 2013-2019 Cadillac ATS, 2014-2019 Cadillac CTS, 2018-2019 Chevrolet Traverse, 2015-2019 Ford Expedition, 2012-2019 Ford Explorer, 2011-2019 Ford F-150, 2011-2019 Ford Fiesta, 2010-2019 Ford Flex, 2019 Ford Ranger, 2010-2019 Ford Taurus, 2015-2019 Ford Transit-150, 2015-2019 Ford Transit-250, 2015-2019 Ford Transit-350, 2015-2019 Ford Transit-350 HD, 2015-2019 Lincoln MKC, 2010-2019 Lincoln MKT, 2015-2019 Lincoln Navigator, 2016-2018 Cadillac CT6, 2013-2018 Ford Focus, 2012-2018 Ford Focus, 2016-2018 Lincoln MKX, 2014-2017 Buick Regal, 2017 Jaguar XE, 2015-2017 Land Rover Discovery Sport, 2012-2017 Land Rover Range Rover Evoque, 2016 Chevrolet Malibu, 2010-2016 Lincoln MKS, 2013-2015 Jaguar XF, 2013-2015 Land Rover LR2, 2007-2009 Mazda 3, 2007-2009 Mazda CX-7, 2006-2007 Mazda 6.