H32342-04 Spark plug 5R6A

This genuine OEM 5R6A spark plug is a critical component for maintaining the performance and reliability of your Harley-Davidson engine. It is designed for a wide range of vintage and classic models, including 1984 to 1999 Evolution Big Twins, late 1978 to early 1982 FL models, late 1978 to 1979 FX models, and 1975 to early 1978 FL and FX models. This plug is a direct replacement for OEM reference 32342-04. Proper ignition is essential for smooth idling and consistent power delivery, and using the factory-specified plug ensures your Shovelhead or Evo runs exactly as the engineers intended. It is a fundamental part of any routine tune-up for these iconic air-cooled engines.