Product Details:
Hook Shaft Gear & Lower Horizontal Shaft Gear (Set Includes 163329, 163997)
New angled 2 gear set runs smoother and quieter, and meshes better.

 Singer Sewing Machines
1030, 417, 620, 625, 628, 629, 635, 636, 638, 639, 714, 719, 724, 734, 737, 750, 755, 758, 770, 774, 775, 776, 778, 833, 900-3, 920-3, 925, 1036, 1200, 2000, 2001, 2005, 4613, 4617, 4623, 6233, 6235, 6267, 6268, 9005, 9008, 9010, 9015, 9018, 9020, 9022, 9027, 9030, 9032, 9034, 9044, 9110, 9113, 9117, 9124, 9130, 9133, 9137, 9143, 9210, 9217, 9224, 9240, 9323, 9334, 9408, 9410, 9416, 9420, 9423, 9430, 9432, 9444, 9500, 9600, 9900, 9910, 9920, 9936, 9940, 640E, 717 School, 935U, 9802, 9836, 9140, 9200, 630, 645, 646, 649, 9000, 6704, 6705, 9440, 9502, 9505, 9518, 9602, 9606, 9608, 9610, 9612, 9614, 9618, 9605. 

Other  Part Numbers 382879