Ngk IMR8C-9H Spark Plug - 3653 Honda CRF 250 2004-2009 Model_Softail European H-Ds typically have 1156

European H-Ds typically have 1156 both front and rear signals

Feature aramid brand resin particles in a soft compound

Includes 4 speakers

Works with M8 or M10 thread size

Slow reading oxygen sensors can cause a drop in fuel economy of 10-15%

Ngk IMR8C-9H Spark Plug - 3653 Honda CRF 250 2004-2009 Model_Softail European H-Ds typically have 1156Features Fine iridium tip ensures high durability and a consistently stable spark Trivalent metal plating for superior anti corrosion and anti seizing properties Outstanding acceleration, high fuel efficiency and durability Ultra small diameter center electrode reduces voltage requirement and extends ignition system life Metal shell plating has enhanced anticorrosion qualities Specs Electrical Resistance 5k Ohms Ground Electrode Configuration Single