NGK Spark Plug - BP-4 - 2911

NGK Spark Plugs BP-4 2911. This spark plug features a copper core and is designed for optimal perf...

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The Green Spark Plug CompanyNgk Bp-4 2911 Spark Plug Copper Core Bp4 New Ngk-Bp-4
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Blueperry agriculture (UK)Ngk Spark Plug Bp4
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Product Information

Full details

The NGK Spark Plug BP-4 (2911) is designed for optimal engine performance, ideal for automotive enthusiasts and mechanics seeking reliable ignition. Its robust copper core construction ensures consistent spark delivery, though users should verify specific engine compatibility before purchase. Key features include a 14mm thread size, a 20.8mm spanner size, and a 9.5mm thread length for secure fitting.

All features

Model Part NumberBP-4
BrandNGK

Extended Product Information

FAQs

What is the main benefit of the copper core in this spark plug?

The copper core provides excellent thermal conductivity and electrical conductivity, leading to reliable spark generation and better heat dissipation, which helps prevent overheating and fouling.

How do I know if the NGK BP-4 spark plug is compatible with my vehicle?

You should always consult your vehicle's owner's manual or a professional mechanic. Check that the thread size (M14 x 1.25), thread length (9.5 mm), and other specifications match your engine's requirements. This plug is cross-referenced with many popular brands and OEM part numbers.

What does 'unscrewable SAE connector' mean?

This refers to the top terminal of the spark plug. An unscrewable SAE connector means the post can be removed, allowing it to be compatible with different types of spark plug boots (e.g., those requiring a removable terminal).

Does this spark plug have interference suppression?

No, the NGK BP-4 spark plug does not feature interference suppression. This means it may not be suitable for vehicles with sensitive electronic equipment that could be affected by radio frequency interference from the ignition system.

What is the spanner size for this spark plug?

The spanner size required to install or remove this spark plug is 20.8 mm.

How often should I check or replace spark plugs?

The replacement interval varies significantly by vehicle manufacturer and spark plug type. Consult your vehicle's service manual for the recommended maintenance schedule. It's generally recommended to inspect spark plugs during routine engine maintenance.

Troubleshooting

Engine misfire or rough idle

Check spark plug connection. Inspect the spark plug for fouling, damage, or excessive wear. Replace if necessary.

Difficulty starting the engine

Ensure the spark plug is correctly installed and torqued. Verify it is the correct plug for your application. Check ignition system components.

Spark plug does not fit

Confirm the thread size (M14 x 1.25) and thread length (9.5 mm) match your engine's requirements. Verify you have the correct spanner size (20.8 mm) for removal/installation.

Pros and Cons

Pros

  • Durable copper core for reliable performance.
  • Standard thread size for wide compatibility.
  • Secure gasket seat prevents leaks.
  • Designed for optimal engine ignition.

Cons

  • Requires verification of specific engine compatibility.
  • Does not feature interference suppression, which may be needed in some sensitive electronic systems.
  • Specific applications may require specialized spark plug types.

Setup, Compatibility & Care

Setup:

  1. Ensure the engine is cool.
  2. Remove the old spark plug using the appropriate socket wrench (20.8 mm spanner size).
  3. Check that the NGK BP-4 spark plug is the correct replacement for your vehicle's specifications.
  4. Hand-thread the new spark plug into the cylinder head to avoid cross-threading.
  5. Tighten the spark plug with a torque wrench to the manufacturer's recommended specification.
  6. Reconnect the spark plug wire.

Compatibility:

This spark plug is cross-referenced with many OEM part numbers and aftermarket brands. Always consult your vehicle's service manual or a professional to confirm compatibility before installation. Key specifications to match include thread size (M14 x 1.25), thread reach (9.5 mm), and terminal type.

Care:

Spark plugs are wear items and are not typically user-serviceable beyond inspection. Check spark plugs during routine maintenance. If a spark plug appears fouled, damaged, or worn, it should be replaced.

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