Champion N-Series Spark Plugs
Champion N-series racing spark plugs have 14mm threads and a 3/4 inch reach. They take a 13/16 inch (21mm) wrench. We offer regular tip (CH NxC) and projected tip ("J Gap", CH NxYC) designs in a variety of heat ranges. An R in the part number indicates a resistor plug for RFI suppression.
Formula Ford 1600 engines with the original cast iron head use the CH N6YC plug.
Recent Top Seller for this product group
The RN4YC Champion Spark Plug is from the N Series, with a 14mm thread, .750" reach. 13/16" or 18mm hex, and a projected tip. This is a "hot" plug.
Champion Sparkplug, N6YC (FF1600)
Champion Sparkplug, N-Series Projected Tip, Very Hot
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Champion Spark Plugs