Seal of fuel valve 17,7x3 mm, 4 holes (MZA) - Simson SR, MZ Note: For EHR petrol valves. Can be used for: Simson SR50, SR80, KR51/1, KR51/2, SR4-3, SR4-4, MZ ETZ125, ETZ150, ETZ250, ETZ251, ETZ301, TS250 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, gpsr@mza.de