HURI Carburetor Primer Bulb for Tecumseh 632378 632378A Toro 3521 Snowblower 3.5hp Replacement parts,non original Fit Craftsman Sears Yardmachines MTD,also can fit Toro 3521 snowblower 3.5hp engine. Replace 632378, 632378A Package include 1pc carburetor + 2pcs primer bulbs + 2pcs hoses + 1pc gasket + 1pc HURI pocket tape Note:you could apply for a full refund if you didn't receive HURI branded pocket tape.