NGK Laser Iridium Spark Plug DILFR7B10G for Saab 9-3 (2008–2009) and 9-5 (2010–2011)

Built around an iridium center electrode, the NGK 97218 Laser Iridium spark plug (designation DILFR7B10G) fires the cylinders on the Saab 9-3 and 9-5 models in the fitment table below. It has an M14 x 1.25 thread with a long 26.5 mm thread length and takes a 16 mm spanner. A single ground electrode sits opposite the iridium tip, and the spark position is 3.5 mm. The internal 5 kOhm resistor handles interference suppression. The plug seals on a gasket seat and has a fixed SAE connector on top. NGK manufactures it in Japan.

This spark plug carries a 24-month, 24,000-mile warranty.

Two details separate this plug from shorter M14 plugs: the 26.5 mm thread length and the 5 kOhm resistor, which is a higher value than many platinum plugs use. A plug with the right thread but a shorter reach will not sit correctly in the combustion chamber, so compare thread length when checking against the plug you remove. The 97218 cross-references to OE numbers 55 564 748 and 12 14 065. The spark plug is the last link in the ignition chain, carrying coil voltage across its gap to light the mixture.

Technical Details

• Manufacturer: NGK, a brand of Niterra Co., Ltd.
• NGK part number: 97218
• NGK designation: Laser Iridium DILFR7B10G
• Thread: M14 x 1.25, 26.5 mm thread length
• Spanner size: 16 mm
• Electrodes: iridium center electrode, one ground electrode
• Interference suppression: 5 kOhm resistor
• Spark position: 3.5 mm
• Gasket seat, fixed SAE connector
• Cross-references: 55 564 748 and 12 14 065
• Made in Japan
• Warranty: 24 months or 24,000 miles

Installation & Tuning Notes

Install this plug with clean, dry threads. Anti-seize is not recommended on these spark plug threads.

Common Questions

Should I put anti-seize on the threads?
No. Anti-seize is not recommended for this plug.

How do I know my Saab needs new plugs?
Misfiring, a check engine light, hesitation, loss of power, and poor fuel economy are the typical symptoms of worn plugs.

PMB Performance sells NGK iridium plugs for late Saab 9-3 and 9-5 owners.

Fitment & Compatibility

Check the fitment table below for the Saab models, years, and trims this plug fits. Send us your VIN if you want us to confirm fit.