Genuine Dellorto. For Dellorto & Spaco Si Carbs. OEM Numbers (for the purpose of comparison) B04559 (MALOSSI), 247652 - 085290 (PIAGGIO), 0455900 05 (DELLORTO). The float needle is a component that cannot be underestimated as it forms the binding link between the fuel tank and the carburettor.
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