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Thanks for checking out this item! I've done my best to accurately describe its condition, whether used or new. If you need any more information, just let me know!

Details:
Sold as a Box of 4 Champion RN14YC Sparkplugs
Spanner size 21mm
Champion Copper Plus spark plugs have a patented SAC-9 semiconductor resistor and a patented Ultraseal™ coated shell for maximum corrosion resistance. 
The copper core center electrode allows for accurate control of heat range for longer life
Note

Fits Harley-Davidson Big Twin 75-99 (Shovelhead & Evolution) and some cars

Before making your purchase, please take a moment to check out the picture of the item for sale. It's always a good idea to ensure that it's compatible with your bike model. If you have any questions or doubts, feel free to reach out to me. I'm here to help!