Description Genuine Husqvarna Fuel Cap to fit the following Husqvarna Riders; R13, Rider 13C, R15C, Rider 15V2, Rider 15V2AWD, R15TSAWD, R16C, Rider 16, Rider18, Rider Pro Flex 18, Rider Pro Flex 21 AWD, Rider 155, Rider 155AWD, R422TSAWD & PR17AWD. Part No; 5066733-01