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The Green Spark Plug Company£4.10Visit shop Ngk Br9hs-10 4551 Spark Plug Copper Core Br9hs10 New Ngk-Br9hs-10
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The NGK BR9HS-10 (4551) spark plug is designed for automotive enthusiasts and DIY mechanics looking to restore or maintain engine ignition reliability. Featuring a durable copper core and a built-in 5kOhm resistor, this plug ensures consistent performance and reduced electrical interference within your ignition system. While it offers premium quality and longevity, it is essential to verify that the BR9HS-10 heat range and thread specifications match your specific engine requirements before installation to prevent potential damage.
| Model Part Number | 4551 |
|---|---|
| Brand | NGK |
The resistor helps suppress electromagnetic interference (EMI) that can interfere with the vehicle's radio or electronic engine management systems.
Replacement intervals vary by vehicle; check your service manual, though standard copper-core plugs are typically replaced every 15,000 to 30,000 miles.
No. You must match the thread size, reach, and heat range to your specific engine requirements to avoid catastrophic engine failure.
Yes, always check and adjust the gap according to your vehicle's service manual before installation.
Copper provides superior heat conduction, allowing the plug to stay within the ideal operating temperature range for longer periods.
Verify the spark plug gap is set to the manufacturer's specifications and ensure the ignition wire is securely seated.
Check for rich fuel mixture issues or incorrect heat range selection; verify if the engine is running properly.
Ensure the spark plug is clean, dry, and that there is no moisture or debris inside the spark plug boot.
Proper installation is vital for ensuring the longevity of your spark plug. Always ensure the engine is cold before removing old plugs to prevent damage to the cylinder head threads. When installing the NGK BR9HS-10, hand-thread the plug first to avoid cross-threading, and then use a torque wrench to tighten it to the manufacturer's specified setting.
Check your vehicle manual for the correct gap size, as incorrect gaps can result in poor performance or starting issues. Regular maintenance involves inspecting the plug for carbon buildup or electrode erosion every few thousand miles, depending on your vehicle's usage pattern.
