1. 174605 Top Cover Complete Fits: 500, 500A, 503, 503A

2. 172563 Light Cover Complete Fits: 500, 500A, 503, 503A

3. 172013 Bottom Cover Fits: 500, 500A, 503, 503A

4. 172083 Bobbin Case Fits: 500, 500A, 503, 503A

5. 172144 Lower Thread Guide Fits: 500, 500A, 503, 503A

6. 172170 Stitch Length Regulator Fits: 500, 500A, 503, 503A

7. 174526 Zig Zag Disc "0" 503, 503A

8. 172546 Top Tension Complete Fits: 500, 500A, 503, 503A

9. 172027 Feed Dog With Screws Fits: 500, 500A, 503, 503A

10. 172080 Hook Fits: 500, 500A, 503, 503A

11. 172551 Bobbin Winder Fits: 500, 500A, 503, 503A

12. 172015 Bed Slide / Bobbin Cover Fits: 500, 500A, 503, 503A

13. 172086 Bobbin Case Position Bracket Fits: 500, 500A, 503, 503A

14. 172552 Bobbin Winding Kick Out Spring Fits: 500, 500A, 503, 503A

15. 143 Top Cover Screws Fits: 500, 500A, 503, 503A

16. 174607, 174609, 172549 Indicator Plates 503, 503A

17. 172057 Zig Zag Return Spring Fits: 500, 500A, 503, 503A

18. 172224 Needle Clamp Fits: 500, 500A, 503, 503A

19. 172547 Thread Take Up Lever Fits: 500, 500A, 503, 503A

20. 172022 Stitch Width Adjustion Lever Fits: 500, 500A, 503, 503A

21. 174608 Needle Positioning Knob 503, 503A

22. 172537-002 Pressure Dial Fits: 500, 500A, 503, 503A

23. 172526 Face Plate Fits: 500, 500A, 503, 503A

Genuine SINGER Rocketeer 503A Used Parts Most Fit SINGER 500A Rocketeer You Pick