N4C, motorcycle spark plug, stock #803c, covers 10% of motorcycle/snowmobile market.
Champion 3436 Platinum Spark Plugs RC12LC4 - 4 Pack
2 Pack NGK Spark Plug - For John Deere Lawn Tractor L120 M78543
10 Pack NGK Spark Plug - For MS270 Stihl Chainsaw
6 Pack ACDelco Standard Spark Plugs 1970-1981 for Ford F3506.0Lps
2 NGK Spark Plug - For 20382 Toro Lawn Mower
1 Pack NGK Spark Plug - For Poulan Pro 325 Chainsaw
