HARLEY
Subcategories
Reliable spark plug designed for improved performance, fuel economy and durability.
High-quality main bearing manufactured to original equipment manufacturer specifications for reliable performance.
Manufactured at leading OEM factories, mainly in Japan. Made to exact OEM specifications for reliable fit and performance.
Manufactured at leading OEM factories (mainly Japan). Made to exact OEM specifications for reliable crankshaft support and long service life.
Precision-made at leading OEM factories in Japan. Produced to exact OEM specifications for reliable performance and long service life.
Precision main bearing made to OEM specifications for reliable performance.
Copper Plus™ spark plug with a copper-core center electrode and Ultraseal™ coating for improved ignition and corrosion resistance.
Copper Plus™ spark plug: copper-core design for controlled heat range, SAC-9 resistor for EMI/RFI suppression, Ultraseal™ coating for rust prevention. Made in the USA.
Copper Plus™ spark plug with copper core for controlled heat range, SAC-9 resistor for EMI/RFI suppression, Ultraseal™ coated shell, made in USA.