OEM Primer Bulb / Walbro 188-513-1Pack Size:1Walbro 188-513, Walbro 188-513-1ESF 014-013, J. Thomas JT-5768, Laser 48146, NHC 203-5768, Prime Line W188-513, Sunbelt WAL-188-513Walbro WT-119C and WT-265 carburetorsOD: 13/16 ", Height: 1 5/16 ", Ethanol: Not compatible with greater than 10% ethanol fuel