The NGK CR9EK Spark Plug (Part 4548) is a direct-fit standard spark plug engineered for high-performance motorcycles and powersports applications. NGK’s proven construction delivers reliable ignition, superior heat transfer, and long service life — ride after ride.
- Trivalent metal plating — superior anti-corrosion and anti-seizing protection for easy removal at service time
- Pure alumina silicate ceramic insulator — exceptional strength and optimized heat transfer for consistent combustion
- Triple seals — prevent combustion gas leakage for maximum compression retention
- Corrugated ribs on insulator — prevent flashover and misfires under high-voltage conditions
- Copper core electrode — aids in heat removal and promotes stable idle and throttle response
Specifications:
- Part Number: NGK 4548
- NGK Code: CR9EK
- Type: Standard / Resistor
- Thread Size: 10mm
- Heat Range: 9
- Brand: NGK Spark Plugs
Sold individually. Verify fitment with your owner’s manual or parts lookup before ordering.
