Fits: Tecumseh AV520, HMSK100, HMSK105, HMSK110 and many others
Cub Cadet / MTD 31A models series snow throwers (2008-2014)
Replaces OEM 951-10639, 951-10639A, 751-10639, 751-10639A, 570682A
primer bulb for snowking engines. If your primer has 2 tabs on the back to mount , this is the one you need!