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NGK Spark Plug - CMR4A 5474

NGK Spark Plug - CMR4A 5474

NGK CMR4A (5474) - Standard Spark Plug / Sparkplug - Nickel Ground Electrode. NGK has become the b...

Best current price£5.04from The Green Spark Plug Company

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Ngk Cmr4a 5474 Spark Plug Copper Core New Ngk-Cmr4a

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The Green Spark Plug CompanyNgk Cmr4a 5474 Spark Plug Copper Core New Ngk-Cmr4a
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Product Information

Full details

This guide is for users of the NGK CMR4A Spark Plug. It helps ensure optimal engine performance by providing clear instructions on setup, usage, and maintenance. However, this guide does not cover advanced engine diagnostics; consult a professional for complex issues.

All features

Model Part Number5474
BrandNGK

Extended Product Information

FAQs

What is the recommended torque specification for the NGK CMR4A?

Refer to your engine's service manual for the correct torque specification. Over-tightening can damage the spark plug and engine.

How often should I replace the NGK CMR4A?

Replacement intervals vary by engine. Consult your engine's service manual or follow the manufacturer's recommendations.

Can I use the NGK CMR4A in any engine?

No. The NGK CMR4A is designed for specific engines. Always check compatibility before purchase and installation.

What does 'nickel ground electrode' mean?

The ground electrode is made of nickel to provide a durable and reliable sparking point.

Where can I find the correct gap setting for my spark plug?

Gap settings are engine specific. Consult your engine's service manual.

What happens if I over-tighten the spark plug?

Over-tightening can damage the spark plug threads and/or the engine cylinder head.

Troubleshooting

Engine misfires.

Check spark plug for damage, fouling, or incorrect gap. Replace if necessary.

Hard starting.

Inspect the spark plug for wear or damage. Ensure the spark plug is properly seated.

Pros and Cons

Pros

  • Improved engine starts.
  • Enhanced fuel efficiency (compared to worn plugs).
  • Durable construction for a longer lifespan.
  • Easy to install.

Cons

  • Requires specific fitment; not compatible with all engines.
  • Performance impact may not be immediately noticeable.
  • Single unit purchase may require multiple units for some applications.

Setup, Compatibility & Care

  1. Compatibility: Verify that the NGK CMR4A is the correct spark plug for your engine using the manufacturer's guide or cross-reference.
  2. Installation: Carefully remove the old spark plug. Install the new CMR4A spark plug, ensuring it is tightened to the recommended torque specification (check your engine manual). Do not overtighten.
  3. Care: Regularly inspect the spark plug for wear, fouling, or damage. Replace as needed, or as recommended by the engine manufacturer.

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