Primer Bulb / Briggs & Stratton 694394Pack Size:1Briggs & Stratton 694394, Briggs & Stratton 4178, Briggs & Stratton 494408, Briggs & Stratton 4128, Briggs & Stratton 5084D, Briggs & Stratton 5084H, Briggs & Stratton 5084KHome Depot 279640, Lowe's 317724, NHC 262-4132, Outdoor Factory Parts 578466302, Oregon 49-058, Rotary 8958, Sunbelt SB8958Briggs & Stratton 10A902, 10A982, 98902 and 98982 with Pulsa-Prime carburetorsOD: 3/4 ", Height: 3/4 ", Ethanol: Not compatible with greater than 10% ethanol fuel