New old stock, box only opened to check condition.  Set of 3

The Champion L86C spark plug is primarily used in vintage vehicles and is also compatible with certain Vespa mopeds and a wide range of marine engines. It is a high-performance spark plug with a 0.6 mm (0.025 in) gap and is equivalent to other brands like NGK B6HS.

Vehicles and Equipment Known to Use Champion L86C (a variation of the L86-L88A plug):

• Massey Ferguson Tractors: A common application for these plugs. 
• Alvis (1937–40): Used in certain models. 
• Armstrong Siddeley Hurricane 16 (1945–49): A specific vehicle model that used this plug. 
• Dellow (1949–57): Found in various models of this make. 
• Other Vintage Applications: The plug was also used in other classic vehicles from makes such as Austin, BMW, Daimler, and Ford, among others.