NGK Spark Plug - SILZKBR8D8S - 97506

NGK SILZKBR8D8S / 97506 Laser Iridium Spark Plug Replaces Bosch 0 242 145 541. With the smallest t...

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Ngk Silzkbr8d8s 97506 Spark Plug Laser Iridium New Ngk-Silzkbr8d8s Small

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The Green Spark Plug CompanyNgk Silzkbr8d8s 97506 Spark Plug Laser Iridium New Ngk-Silzkbr8d8s Small

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eBayNGK SILZKBR8D8S Spark Plug For BMW F30 F80 F31 F20 F21 F10 F07 F33 F06 F13 E84

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AutodocNGK Spark plug BMW 97506 0037581,12120037581,12120039664 Engine spark plug,Spark plugs 0037581,12120037581,SILZKBR8D8S

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Product Information

Full details

The NGK SILZKBR8D8S (97506) Laser Iridium spark plug is designed for automotive enthusiasts and DIY mechanics seeking an OEM-standard replacement to improve engine efficiency and ignition reliability. Featuring one of the smallest tip diameters in the industry, this spark plug offers superior ignitability, faster starts, and smoother acceleration, making it an excellent choice for modern engine performance. While it provides a significant upgrade in durability and anti-fouling capabilities, users must ensure exact compatibility with their specific vehicle engine type to avoid performance issues.

All features

Model Part Number	SILZKBR8D8S
Brand	NGK

Extended Product Information

FAQs

Can I adjust the gap on the SILZKBR8D8S?

While the plug comes pre-gapped, if adjustment is necessary, use a wire-type gap gauge. Be extremely careful not to touch or pressure the fragile iridium center electrode.

How often should I replace these spark plugs?

Laser Iridium plugs are typically designed for high-mileage intervals. Refer to your vehicle’s service manual for the recommended replacement schedule, which is often between 60,000 and 100,000 miles.

Is anti-seize compound required?

No. NGK uses trivalent metal plating on their spark plug shells, which provides anti-seize protection during installation and removal. Adding external compound can result in improper torque.

What does the 97506 number signify?

97506 is the stock number for the NGK SILZKBR8D8S. It is used to identify the specific part number for retail and inventory purposes.

Will these improve horsepower?

These plugs are designed to maintain optimal engine performance and efficiency. While you may notice smoother idling and better throttle response, a spark plug alone will not significantly increase peak horsepower.

Troubleshooting

Engine misfires after installation

Check that the ignition coil is fully seated and the spark plug is torqued to the correct specification.

Hard starting despite new plugs

Verify that the fuel system and battery are in good condition; the spark plug may not be the root cause of starting difficulty.

Pros and Cons

Pros

Extremely durable with long service intervals
Superior ignitability for faster starts
Excellent anti-seizing properties due to trivalent plating
Reduces emissions and improves fuel economy
OEM-approved design ensures high reliability

Cons

Specific to select vehicle engines
Requires proper gapping tools for sensitive iridium tips
Higher initial cost compared to standard spark plugs

Setup, Compatibility & Care

Before installation, always verify compatibility by checking your vehicle’s owner manual or using an online cross-reference tool to match the MPN (97506) with your specific engine code.

Preparation: Ensure the engine is cool to the touch. Clean the area around the spark plug well with compressed air to prevent debris from entering the cylinder.
Installation: Thread the plug by hand to avoid cross-threading the cylinder head. Use a torque wrench to tighten to manufacturer specifications; do not overtighten, as this can damage the trivalent plating or the head threads.
Care: Do not use abrasive cleaners or wire brushes on the iridium tip, as this will destroy the precious metal coating. The anti-seize coating on the threads is typically pre-applied; adding aftermarket anti-seize paste is generally unnecessary and can lead to incorrect torque readings.