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NOTE: A plug with a low heat range number is a cold plug that quickly dissipates heat to the engine block and cooling system, while a high heat range is a hot plug that retains heat. By properly selecting the heat range of the plug, it ensures that the plug will operate between the plug’s designed operating range of 500-900 degrees Celsius. In this range, the spark plug will be self-cleaning, yet will not be hot enough to pre-ignite the air/fuel mixture
Original equipment replacement for later model Oilheads with 2 plugs heads
This is the main plug with FR6DDC as secondary plug.
Can be used to replace FR6DDC, FR6DTC & NGK BKR7EKC.
Replaces NGK BKR7EKC - the Features and Benefits versus the NGK BKR7EKC are - Yttrium enhanced center electrode for longer plug life
- Yttrium enhanced ground electrodes for longer life
- Nickel Yttrium ground electrodes for enhanced heat dissipation
- Nickel plating for enhanced corrosion resistance and anti-seizing vs. zinc chromate coating for NGK
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