Heat range is the measure of how fast the spark plug tip dissipates combustion heat. It must do this in a precise and controlled manner so the spark plug will:

• Stay cool enough to avoid pre-ingniton and/or electrode destruction due to detonation.
• Run hot enough to burn off combustion deposits that would otherwise collect on the insulator tip and cause fouling that results in misfire.
• Adapt to specific engine characteristics and widely varying driving/load conditions.

Key Benefits and Applications of Brisk Silver Racing Spark Plugs

• Silver is the best Electric and Heat Conductor – the best material for performance and racing spark plugs• Superior Ignition Ability Increases Engine Power• Lower Required Supplied Ignition Voltage• Good Resistance to Fouling and Easier Starts• Race Engines and Engines with Hard to Ignite Fuels• Supercharged / Turbocharged / Nitrous engines• Excellent Spark Plug Choice for any Modified Vehicle, even for High Mileage Vehicles and Vehicles With Oil Consumption Problems• Recommended spark plug gap is .035″• For best results replace these plugs every 20,000 miles