401S by CHAMPION - Copper Plus - Shop Pack - RS12YC
Amazon.com: Champion Copper Plus 401 Spark Plug (Carton of 1) - RS12YC : Patio, Lawn & Garden
PDF) Cross Reference Chart - Spark Plugs, NGK, - · PDF fileNOTE: Cross references are provided as a guide only. Due to differences in design and material, plugs produced by various manufacturers -