What makes the ceramic insulator in these NGK spark plugs special?

The NGK spark plugs use a pure alumina silicate ceramic insulator. This material offers superior strength and better heat transfer compared to standard ceramic, helping to maintain optimal dielectric performance.

Why is the trivalent metal plating important on these spark plugs?

The trivalent metal plating provides superior anti-corrosion and anti-seizing properties. This makes installation and removal easier, especially after the plug has been in service for some time.

What is the benefit of the copper core in these spark plugs?

The solid 98% pure copper core offers excellent heat dissipation and conductivity. This helps manage heat within the combustion chamber and contributes to the wide heat ranges these plugs can handle.

NGK Standard Spark Plug (BMR4A)

Name: NGK Standard Spark Plug (BMR4A)
Brand: NGK
SKU: ngk-ngk-standard-spark-plug-bmr4a-pa-ng5728
Price: 2.85 USD
Availability: InStock

$2.85

In Stock

NGK Standard Spark Plug Box of 10 (BMR4A). Offers reliable performance with corrosion-resistant plating for easy installation.

Key Features

Fits O/B - HONDA.
Features trivalent metal plating for superior anti-corrosion and anti-seizing properties.
Pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
Solid 98% pure copper core aids in heat removal and conductivity.
Triple seals prevent combustion gas leakage.
Corrugated ribs prevent flashover.

This NGK spark plug is listed for O/B - HONDA applications. Please verify fitment for your specific vehicle.

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Product Details

The pure alumina silicate ceramic insulator in these NGK spark plugs is a key detail, offering superior strength and better heat transfer compared to standard ceramic. This is part of why NGK has been a go-to for OE applications for so long. You get a box of 10 BMR4A plugs, which is handy if you're working on an engine that needs a full set and you want them all to be the same age and wear level.

NGK uses a solid 98% pure copper core, which is excellent for dissipating heat away from the combustion chamber and also helps with conductivity. This contributes to the wide heat ranges these plugs can handle. The trivalent metal plating on the exterior is a practical touch, giving them superior anti-corrosion and anti-seizing properties. This means they'll be easier to install and remove down the road, which is always a plus during maintenance.

These plugs are built for longer life and consistent performance. The corrugated ribs on the insulator help prevent flashover, and the triple gasket sealing ensures there are no combustion gas leaks. It's a well-built plug that offers reliable performance for many applications.