Fuel tank cap Ø40mm (MZA) - Simson Note: The fuel tank cap includes a rubber seal. Can be used for: Simson S50, S51, S70, SC-050, SD 50, Sperber-BR, SR1, SR2, SR4-2, SR4-3, SR4-4, SR50, SR80, TS050, DUO, KR50, KR51/1, KR51/2 The product of the MZA, which is the exclusive holder of the SIMSON brand. GPSR Contact: MZA Meyer–Zweiradtechnik GmbH, Baunsbergstr. 60-62, 34131, Kassel, Germany,