What is the benefit of the trivalent metal plating on these spark plugs?

The trivalent metal plating provides superior resistance to corrosion and seizing. This makes it easier to install the spark plugs and also easier to remove them later if needed, without damaging the cylinder head.

Why is the copper core important in these NGK spark plugs?

The solid 98% pure copper core offers excellent heat dissipation and conductivity. This helps the spark plug manage heat effectively, contributing to its ultra-wide heat range and reliable performance across different engine loads.

How many spark plugs are included in this box?

This product is a box of 10 NGK Standard Spark Plugs (BR9ECS). If your vehicle requires a different quantity, you can order them individually.

NGK Spark Plugs BR9ECS 4677 - Multi-Fit Ignition

Name: NGK Standard Spark Plug Box of 10 (BR9ECS)
Brand: NGK
Price: 89.86 USD
Availability: InStock

NGK Standard Spark Plug Box of 10 (BR9ECS)

$89.86

Only 2 left in stock

NGK Standard Spark Plug Box of 10 (BR9ECS). Reliable OE quality performance with corrosion-resistant plating.

Key Features

Fits many Ski-Doo and Yamaha models.
Pure copper core offers solid heat dissipation and conductivity.
High-grade alumina silicate ceramic insulator provides superior strength and better heat transfer.
Trivalent metal plating delivers superior anti-corrosion and anti-seizing properties.
Triple seals prevent combustion gas leakage.
Corrugated ribs on the insulator prevent flashover.

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Product Details

The pure copper core in these NGK BR9ECS spark plugs offers solid heat dissipation and conductivity, which is key for maintaining consistent engine temperatures across a wide range of operating conditions. These are OE replacement plugs, meaning they're built to the same standards as what originally came in your vehicle. They feature a high-grade alumina silicate ceramic insulator for strength and better heat transfer, helping to prevent fouling and ensure reliable ignition.

NGK uses trivalent metal plating on these plugs, which gives them superior resistance to corrosion and seizing. This makes installation and later removal much easier, a practical benefit for anyone working on their own engine. The triple gasket sealing is also a notable feature, effectively preventing any combustion gas leakage and maintaining proper cylinder pressure. This box contains 10 plugs, suitable for many multi-cylinder applications like various Ski-Doo snowmobiles and Yamaha snowmobiles and personal watercraft.