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The NGK Motorcycle Spark Plug Cover - SD05EG (5818) is a precision-engineered resistor caps designed to deliver perfect ignition noise suppression across the full frequency range without reducing engine performance. Built around a durable ceramic resistor element and a tough phenolic resin body, these covers provide long-term, stable resistance and outstanding reliability even under high heat and high voltage. Moisture-sealing rubber liners at both ends prevent electrical leakage, while vibration-resistant construction ensures consistent contact between the spark plug and high-tension lead.
Ideal for modern motorcycles that must meet strict noise regulations, NGK spark plug covers maintain full power output and service life when used alone or in combination with NGK resistor spark plugs.
Technical Details:
Spark Plug Health Check
Use Spark Plugs To Check Your Engine Health
Read More
Heat Ranges Explained
Learn what a spark plugs heat range means, and how it can effect your engine
Read More
Heat Cross Reference
Use our spark plug heat range cross reference table
Cross Reference Heat Range
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