Sierra fuel line assemblies meet or exceed both USCG safety regulations and EPA evaporative emissions requirements. Assemblies consist of engine connector, low-perm primer bulb and tank connectors. Designed to be used in connection with 18-8078 large bore 13mm tank adapter. 2-stroke DT model complete with 13mm tank adapter to replace small (11mm) and large (13mm) bore fuel line assemblies. 4-stroke DF model designed with 13mm quick-disconnect tank connector and a prong engine connector to replace most 15 to 140HP assemblies. Hi visibility display packaging.