Shop
Ngk Spark Plug R0451b-8
Part # 2103-0174
$76.95
NY: 12
National: 20+
- —The ultimate in the evolution of spark plug technology and performance from the industry leader
- —The iridium electrode is 25% smaller than a platinum electrode, and it's just 1/4 the size of a conventional nickel electrode
- —Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life
- —New metal shell plating has enhanced anti-corrosion qualities
Calculated shipping at checkout
30-day returns on unused parts
Ships in 1–3 business days
Specifications
Center Electrode ProjectionNon-Projected
UnitsEach
Ground Electrode ShapeTaper Cut
TypeResistor
Electrode Tip MaterialIridium
Riding StyleOff-Road
StyleIridium Racing
ModelR0451B-8
Spark Gap0.7 mm
Thread Reach26.5 mm
Electrical Resistance5k Ohms
Ground Electrode ConfigurationSingle
Heat Range8
Product NameSpark Plug
Center Electrode TypeFine Wire
Hex Size14.3 mm
Spark Gap0.028"
Terminal ConfigurationSolid Terminal
Weight1 lbs
Dimensions (L x W x H)3.77" x 0.94" x 0.94"
Fits These Vehicles (2)
CRF250R2010
CRF250R2009
Not sure it fits? Call our Harley techs at 607-654-7431.









