NGK 94201 Spark Plug

NGK Laser Iridium Spark Plug 94201

NGK 94201 is a Laser Iridium High Ignitability spark plug built for direct OE-style service on select BMW and MINI engines. It combines an iridium center electrode with a high-ignitability ground electrode design to support consistent combustion, stable idle, and reliable starting.

Key Features

• Laser Iridium High Ignitability design for OE-style ignition performance
• Iridium center electrode tip for durable spark delivery
• Square platinum ground electrode tip design for precise ignition characteristics
• 5000 ohm resistance for ignition system compatibility
• Flat seat, 12 mm thread diameter, 26.5 mm reach, and 14 bi-hex hex size
• Pre-gapped at .030 for listed applications
• NGK part number 94201, also listed as SILZKGR8B8S

Product Details

As part of NGK’s Laser Iridium High Ignitability line, this spark plug is engineered around OE specifications for modern turbocharged and hybrid BMW and MINI engines. The copper core construction helps manage heat transfer, while the iridium tip supports long-term electrode stability. For drivers searching for an NGK 94201 spark plug for BMW 330i, 530i, X3, or MINI Cooper Countryman applications, this plug matches the factory-style service requirements listed in the fitment data.

This part cross-references Bosch 0 040 552 and 12 12 0 041 666 for the same application.

Common Issues This Part Can Address

• Hard starting or extended crank time
• Rough idle or inconsistent combustion
• Misfire codes related to worn spark plugs
• Reduced throttle response from aged ignition components
• Service interval replacement on BMW and MINI engines calling for high-ignitability plugs

Installation Notes and Tips

Verify engine code, model year, and OE service interval before installation. This plug is listed with a .030 gap for the confirmed applications, so check the vehicle specification against the service information before use. Use proper spark plug socket tools and torque to the manufacturer’s specification for the engine. Confirm the flat seat and 12 mm thread size match the cylinder head before installation.

Quality Assurance

NGK is a major OE spark plug supplier in North America with more than 80 years of automotive experience. The brand’s manufacturing and distribution network supports OE-level consistency for domestic and import applications, including BMW and MINI service parts such as NGK 94201.