Primer Bulb Assembly / Tecumseh 632694APack Size:1Tecumseh 632694ALaser 42597, NHC 262-1800, Oregon 49-231, Prime Line 7-04949, Rotary 9807Tecumseh Carburetors 632646, 632669, 632670, 632681 and 632756OD: 3/4 ", Height: 13/16 ", Ethanol: Not compatible with greater than 10% ethanol fuel