The utility model discloses a heavy shifter for firing oil filter's filter core with strain seat and be connected, heavy shifter includes a connecting axle, the lower extreme internal diameter of connecting axle and the location axle looks adaptation of filter core, and the bottom entry connecting axle of the location axle of filter core from the connecting axle, the upper end external diameter ofconnecting axle and the filter core jack looks adaptation of straining the seat, and the filter core jack of straining the seat is inserted to the upper end of connecting axle. The utility model discloses a conversion of eccentric connecting axle realizes the filter core and strains being connected of two disalignment parts of seat.