Rubber cap BING cold start piston 21mm carburetor for Zündapp KS 50 WC, Hercules

Rubber cap for the cold start piston, suitable for Bing 21 mm carburetors, specially developed for Zündapp KS 50 WC and Hercules models. Made from high-quality, heat- and fuel-resistant rubber, it ensures a secure seal of the cold start piston, thus supporting optimal function of the starting process.

The precise fit guarantees easy installation and long-term durability in operation under demanding conditions. This spare part is essential for maintaining vintage two-wheelers with Bing 21 mm carburetors and ensuring reliable cold-start characteristics.