7705-4 Rocker box oil drain fittings. Black

Keeping a Knucklehead engine oil-tight is a constant battle, and these Colony rocker box oil drain fittings are exactly what you need for a period-correct fix. These fittings feature a black parkerized finish, serving as an accurate reproduction of the original rocker box oil drain tube nipples. They are designed to fit 1938 to 1947 Knucklehead models and are a direct replacement for the original part number 94-38. This set includes four fittings, providing enough hardware to properly outfit your rocker covers while maintaining the authentic look of a vintage overhead-valve engine.