NGK Spark Plug - 7811
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OnBuy.com£7.79Visit shop Genuine Ignition Spark Plug Ngk Bp6es 7811 Fits Honda Engine Gx140 Generators 5056213512071
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OnBuy.comGenuine Ignition Spark Plug Ngk Bp6es 7811 Fits Honda Engine Gx140 Generators 5056213512071
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Product Information
Full details
The NGK 7811 (BP6ES) spark plug is a high-reliability component engineered specifically for owners of Honda GX140 engines, providing consistent ignition for industrial and garden equipment. This genuine NGK plug is ideal for users seeking to maintain smooth engine performance and avoid starting issues, though users should ensure they are using the correct heat range specified for their specific engine model year.
All features
| Model Part Number | 7811 |
|---|---|
| Brand | NGK |
Extended Product Information
FAQs
Is this spark plug compatible with other Honda engines?
The BP6ES 7811 is specifically optimized for the Honda GX140. Always check your engine's service manual or the label on the original plug to confirm compatibility.
How often should I replace the NGK 7811?
It is recommended to replace the spark plug at least once per season or every 100-200 hours of operation, depending on the severity of use.
Do I need to gap this plug?
Yes, while it comes ready, you should always check the gap against the specific requirements of your Honda GX140 manual before installation.
Can I use this on non-Honda equipment?
Only if the manufacturer of your equipment specifically lists BP6ES as a compatible part number.
What does the 'BP6ES' designation mean?
It is NGK's internal code describing the thread size, resistor type, heat range, and firing end construction.
Troubleshooting
Engine fails to start
Verify the spark plug wire is firmly attached and check if the electrode is wet with fuel (flooded) or excessively carbon-fouled.
Engine runs roughly or misfires
Check the gap of the spark plug and ensure the ceramic insulator is not cracked or damaged.
Pros and Cons
Pros
- Genuine OEM-grade reliability
- Precise fit for Honda GX140 engines
- Reduces cold-start difficulties
- Resists thermal degradation during prolonged use
Cons
- Not compatible with all small engine brands
- Requires proper gapping before installation
- Must be handled carefully to avoid ceramic damage
Setup, Compatibility & Care
To install the plug, first ensure the engine is completely cool. Use a spark plug socket wrench to remove the old plug, taking care not to allow debris into the cylinder head. Before inserting the new NGK 7811, verify the electrode gap with a feeler gauge to match your engine's manual specifications. Thread the new plug in by hand for the first few turns to avoid cross-threading, then tighten firmly with the wrench. For care, inspect the electrode color periodically; a light tan color indicates healthy combustion, while black or oily deposits may suggest other maintenance is needed, such as air filter cleaning or carburetor adjustments.