NGK Spark Plug BR5ES - 4722
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Product Information
Full details
This guide is for owners of petrol engines who need a reliable spark plug for optimal ignition. The NGK BR5ES (MPN 4722) offers high-quality construction for consistent performance, ensuring your engine runs smoothly. A potential consideration is its specific thread and hex nut size, requiring verification for compatibility with your engine's cylinder head.
All features
| Model Part Number | 4722 |
|---|---|
| Brand | NGK |
Extended Product Information
FAQs
What is the main function of a spark plug?
The main function of a spark plug is to ignite the air-fuel mixture within the combustion chamber of a petrol engine, generating the power needed to move the vehicle.
What does the 'BR5ES' designation mean?
BR typically indicates the series or type, 5 is the heat rating (higher numbers are hotter), E indicates thread size (14mm), and S indicates the projection type. ES is a specific insulator nose type. Refer to NGK's specific catalog for full details.
How do I know if my spark plug needs replacing?
Signs include engine misfires, rough idling, poor acceleration, decreased fuel efficiency, and difficulty starting. Visual inspection might reveal electrode wear, fouling, or damage to the insulator.
Can I use this spark plug in a diesel engine?
No, this spark plug is designed for petrol (gasoline) engines only. Diesel engines use compression ignition and do not use spark plugs.
What is interference suppression?
Interference suppression refers to a resistor built into the spark plug (in this case, 5 kOhm) that reduces radio frequency interference generated by the ignition system, which can affect electronic devices.
How tight should I tighten the spark plug?
It is crucial to tighten the spark plug to the manufacturer's specified torque using a torque wrench. Overtightening can damage the cylinder head, while undertightening can lead to a poor seal. Consult your engine's service manual for the correct torque value.
What is the spark projection of the BR5ES?
The spark projection for the NGK BR5ES spark plug is 1mm.
Troubleshooting
Engine misfires or runs rough
Check if the spark plug is properly installed and tightened. Inspect the plug for fouling, damage, or wear. Ensure the gap is correct (if adjustable on your engine type) and consider replacing the plug if it's old or damaged.
Engine won't start
Verify that the spark plug is receiving adequate spark. Check ignition system components. Ensure the spark plug is correctly seated and connected to the ignition lead. A fouled or worn plug can prevent ignition.
Poor fuel economy
A worn or fouled spark plug can lead to inefficient combustion. Replace the spark plug if it shows signs of wear or contamination. Ensure the correct plug type is being used as per the engine manufacturer's specifications.
Pros and Cons
Pros
- High-quality NGK manufacturing ensures reliability.
- Nickel electrodes offer good durability for consistent performance.
- Designed for effective ignition and power generation.
- Interference suppression helps maintain engine electronics integrity.
- Standardized dimensions for common applications.
Cons
- Specific dimensions may limit compatibility with some engine types.
- Single earthed electrode may offer less durability than multi-ground plugs in extreme conditions.
- Requires precise torque during installation to avoid damage.
- Not suitable for diesel engines.
Setup, Compatibility & Care
Setup:
- Ensure the engine is cool before beginning.
- Use the correct spark plug socket wrench to remove the old spark plug.
- Verify the NGK BR5ES (4722) is compatible with your engine's specifications (refer to your engine's manual).
- Carefully thread the new spark plug into the cylinder head by hand to avoid cross-threading.
- Tighten the spark plug using a torque wrench to the manufacturer's specified torque value (typically 20-30 Nm, but consult your engine manual).
Compatibility:
This spark plug is designed for petrol engines. Key dimensions to check for compatibility include:
- Thread Size: 14mm
- Thread Reach: 19mm
- Hex Size: 20.8 mm
Always consult your vehicle or equipment's service manual to confirm the correct spark plug type and specifications.
Care:
Spark plugs are generally considered wear items and are not typically 'cared for' beyond proper installation. If a spark plug needs to be removed for inspection, handle it carefully to avoid damaging the electrodes or porcelain insulator. Avoid dropping the plug or subjecting it to excessive force.