The GM# 1942518 Distributor Primary Lead is a vintage part manufactured by GM (General Motors) in the years 1957-1970. This NOS (New Old Stock) item is true to its original casting date of 1956-1974 with a black color finish. It is a performance part designed for distributor primary lead functionality, making it an ideal choice for Corvette and other GM restoration projects. The product also includes a manufacturer warning related to potential chemical exposure.