Fits Models: Tecumseh AV520, HMSK100, HMSK105 and HMSK110
Specifications: OD: 1 3/4" OD 1 3/4" Height 1 1/2" Ethanol Not compatible with greater than 10% ethanol fuel
Additional Information: Original Tecumseh equivalent 120-925 Primer Bulb 120-925 Primer Bulb