Oil drain screw with valve Thread M16 x 15 This valve is mounted instead of the original oil drain

screw. Simply remove protecting cap - tighten hose - then the valve opens. Protecting cap mount - valve closed. Everything without tool. No dirty and burned hands. No oil on the floor. 10637 is a neccesary item. And only 1 time mounting. That preserves the thread in the oil pan (those are often no longer supplyable). Completely manufactured in Germany! The thread M16 x 1.5 was Installed in: Citroen 2CV, DS, HY, 11CV, GS. Nearly all classical Peugeot (403, 404, 504, 304, 204)