NGK Spark Plug - 3964
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The Green Spark Plug Company£5.78Visit shop Ngk Bkr5eku 3964 Spark Plug Copper Core New Ngk-Bkr5eku
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The Green Spark Plug CompanyNgk Bkr5eku 3964 Spark Plug Copper Core New Ngk-Bkr5eku
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5 x NGK Spark Plug BKR5EKU (3964)Free delivery in 1–3 days£32.74Visit shop →
AutodocNGK Spark plug VW,MERCEDES-BENZ,TVR 3964 101000035AA,101000035AB,101000035AA Engine spark plug,Spark plugs 101000035AB,101000035AA,101000035AB,BKR5EKU
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Product Information
Full details
The NGK BKR5EKU 3964 spark plug is designed for drivers of specific Mercedes-Benz, TVR, and VW models seeking reliable ignition and optimal engine performance. Its key benefit is the extended projection design, which can improve combustion efficiency. A caveat to consider is its specific fitment, requiring verification against your vehicle's OEM specifications. This plug features a durable copper core, nickel middle electrode, and two earthed electrodes for consistent spark delivery.
All features
| Model Part Number | 3964 |
|---|---|
| Brand | NGK |
Extended Product Information
FAQs
What vehicles is the NGK BKR5EKU 3964 compatible with?
This plug is designed for various Mercedes-Benz, TVR, and VW models, and is compatible with OEM numbers such as 101 000 035 AA/AB for Audi, Seat, Skoda, VW, and Lamborghini. Always verify fitment for your specific vehicle.
What does 'Extended Projection' mean for performance?
An extended projection means the tip of the spark plug extends further into the combustion chamber, which can help optimize the spark's position for more efficient combustion and potentially improve engine performance and fuel economy.
What is the thread size and spanner size?
The thread size is M14 x 1.25, and the spanner size (the size of the wrench needed) is 16 mm.
How many spark plugs do I need to buy?
This product is sold individually (1 unit per package). You will need to purchase the correct number of spark plugs for your vehicle's engine cylinders (e.g., four for a 4-cylinder engine).
Can I adjust the gap on this spark plug?
The NGK BKR5EKU 3964 is designed with a fixed gap and is not intended to be re-gapped. Attempting to adjust the gap can damage the plug and lead to poor performance.
What is the material of the electrodes?
It features a nickel middle electrode and two earthed electrodes, designed for durability and consistent spark delivery.
Troubleshooting
Engine misfires or rough idle
Ensure the spark plug is correctly installed and torqued. Check the spark plug wire for damage and secure connection. Verify compatibility with your vehicle.
Reduced fuel economy
Confirm correct installation and that the plug is the specified type for your engine. Worn plugs or other engine issues can also cause reduced economy.
Difficulty starting the engine
Check that all spark plugs are correctly gapped (if applicable, though this is fixed) and properly connected. Ensure the ignition system is functioning correctly.
Pros and Cons
Pros
- Enhanced combustion with extended projection design.
- Durable construction with copper core and nickel electrode.
- Reliable ignition due to dual earthed electrodes.
- Reduces electrical interference for sensitive vehicle systems.
Cons
- Specific fitment requires careful checking against vehicle's OEM part number.
- May not be suitable for all engine types or performance modifications.
- Single unit purchase means multiple plugs must be ordered separately for multi-cylinder engines.
Setup, Compatibility & Care
Compatibility Check: Before installation, verify that the NGK BKR5EKU 3964 is listed as a direct replacement for your specific vehicle's make, model, and year. Cross-reference the OEM part numbers provided (e.g., Audi, Seat, Skoda, VW, Lamborghini: 101 000 035 AA/AB) with your vehicle's service manual or a reliable parts database. Ensure the thread size (M14 x 1.25) and spanner size (16 mm) match your engine's requirements.
Installation: Installation should be performed on a cool engine. Always use a torque wrench to tighten the spark plug to the manufacturer's specified torque to avoid damage to the cylinder head or the plug itself. Ensure the spark plug wire is securely connected.
Care: Spark plugs are not typically user-serviceable for cleaning or adjustment. If a plug is fouled or damaged, it should be replaced. Regular inspection during routine maintenance is recommended.