The 16mm Hollow Sump Plug Washer is a crucial sealing component for classic Citroën models like the 2CV, DS, ID19, HY, GS, and 11CV 11D. This washer ensures a proper seal of the oil sump pan, preventing oil leaks. Constructed from high-quality materials, it provides a perfect fit and long-lasting reliability. Ideal for maintenance and restoration projects of classic Citroëns, this sump plug washer helps maintain the original performance and efficiency of your vehicle. Designed with precision and attention to detail, it is an indispensable part for Citroën enthusiasts and mechanics.