NGK 97506 Spark Plug

NGK Laser Iridium Spark Plug for BMW

NGK 97506 is a Laser Iridium High Ignitability spark plug built for BMW engines that call for precise ignition performance and OE-style service intervals. With an iridium center electrode, square platinum ground electrode tip, and a 0.030 pre-gap, this plug supports consistent combustion in a wide range of BMW turbocharged and performance applications.

The NGK Laser Iridium High Ignitability line focuses on stable spark delivery and OE-level durability. Part number 97506, also identified as SILZKBR8D8S, is engineered with a copper core, 5,000 ohm resistance, flat seat design, and 14 bi-hex hex size for the specified BMW applications.

• Laser Iridium High Ignitability design for precise spark delivery
• Iridium center electrode tip with square platinum ground electrode tip
• 0.030 pre-gap and manufacturer heat range 8
• Copper core construction for center and ground electrodes
• Flat seat, 12.00 mm thread diameter, 26.5 reach
• Non-removable nut terminal type
• OE-style replacement for many BMW turbo and performance engines

Detailed Product Overview

NGK 97506 is a direct-fit style spark plug for many BMW 320i, 328i, 335i, X3, X5, M3, M4, M5, and 7 Series applications listed in the fitment data. It is also used across several BMW Gran Coupe, xDrive, and M Performance models, making it a strong match for drivers searching for a BMW spark plug replacement with OE-spec ignition characteristics. This part cross-references Anchor 8165 for the same application.

As an OE supplier with decades of automotive experience, NGK builds this Laser Iridium High Ignitability spark plug to meet original equipment standards for durability and operational performance. The 5,000 ohm resistance and iridium/platinum electrode design help maintain reliable ignition performance in demanding BMW engine setups.

Common Issues This Spark Plug Can Address

• Rough idle caused by worn spark plugs
• Hard starting or extended crank time
• Misfire codes related to ignition wear
• Reduced throttle response from weak spark output
• Service interval replacement for BMW engines requiring high ignitability plugs

Installation Notes and Tips

Verify the exact BMW engine application before installation. Many listed vehicles require the spark plug gap to be adjusted to 0.032 inches, while the plug is supplied with a 0.030 pre-gap. Use the vehicle-specific service information for torque and gap specifications, and inspect ignition coils and boots during replacement.

Compatible With 2011-2021 BMW M2, 2015-2020 BMW M4, 2012-2018 BMW 320i, 2013-2018 BMW X5, and many additional BMW applications shown in the fitment data.

Quality Assurance

NGK is a major OE spark plug supplier in North America and manufactures ignition components to original equipment standards. Part number 97506 is built for the specified BMW fitments and OE-style service requirements.