Discover the  59 key assemblies and genuine parts collections for your  FLSTF SOFTAIL FAT BOY (BX). Each assembly, such as the Oil Pump, comprises multiple components, each with its own OEM number and detailed information.

Navigate through organized categories of Harley factory parts to quickly locate the OEM parts you're interested in.

Please select a part category below:

 32. SUSPENSION - REAR FORK AND SHOCK ABSORBERS
 33. SEATS VERSION 1
 21. BELTS W/ CHAINS AND SPROCKETS
 7. BALANCER SHAFT ASSEMBLY
 26. BRAKE - FRONT BRAKE CALIPER ASSEMBLY
 17. TRANSMISSION HOUSING ASSEMBLY
 2. ENGINE ASSEMBLY
 18. TRANSMISSION GEARS
 30. SUSPENSION - FRONT FORK ASSEMBLY W/ STEERING STEM
 16. GEAR SHIFTER ASSEMBLY
 44. FUEL TANK TRIM VERSION 1
 55. ELECTRICAL - MAIN WIRING HARNESS - 2
 27. BRAKE - REAR BRAKE CALIPER ASSEMBLY
 25. BRAKE - REAR BRAKE CYLINDER W/ PEDAL
 28. WHEEL - FRONT WHEEL ASSEMBLY W/ BRAKE DISK
 57. ELECTRICAL - SWITCHES W/ CIRCUIT BREAKERS
 40. FENDER - REAR W/ SUPPORTS
 20. CHAIN CASE HOUSING
 14. ENGINE SENSORS W/ SWITCHES
 59. GENERAL AND WARNING LABELS
 49. INSTRUMENT ASSEMBLY
 24. BRAKE - FRONT BRAKE CYLINDER ASSEMBLY W/ LEVER
 10. FUEL INJECTION ASSEMBLY
 31. FRAME ASSEMBLY W/ JIFFY STAND
 35. FOOTRESTS AND FOOTBOARDS ASSEMBLIES
 11. AIR CLEANER ASSEMBLY
 53. HORN ASSEMBLY
 48. ELECTRICAL - BATTERY W/ BATTERY TRAY ASSEMBLY
 42. FUEL TANK ASSEMBLY
 22. CLUTCH LEVER ASSEMBLY
 46. OIL TANK W/ LINES
 23. BELT GUARD ASSEMBLY
 13. ELECTRICAL - ELECTRONIC CONTROL MODULE W/ COIL ASSEMBLY
 29. WHEEL - REAR WHEEL ASSEMBLY W/ BRAKE DISK AND SPOCKET
 6. CRANKCASE ASSEMBLY W/ OIL FILTER
 50. TURN SIGNALS - FRONT
 39. FENDER - FRONT
 3. CYLINDERS W/ HEADS AND VALVES
 36. HANDLEBAR ASSEMBLY
 9. ENGINE MOUNTS
 51. TURN SIGNALS - REAR
 58. MIRROR ASSEMBLY
 12. ELECTRICAL - ALTERNATOR W/ VOLTAGE REGULATOR
 41. LICENSE PLATE ASSEMBLY
 47. EXHAUST SYSTEM
 15. ELECTRICAL - STARTER ASSEMBLY
 38. HEADLIGHT ASSEMBLY
 52. TAIL LIGHT ASSEMBLY
 8. CAMSHAFTS ASSEMBLY W/ CHAINS
 4. ROCKER ARM ASSEMBLY W/ PUSHRODS
 60. EVAPORATIVE EMISSIONS COMPONENTS (CALIF. ONLY)
 34. SEATS VERSION 2
 56. ELECTRICAL - HANDLEBAR SWITCH ASSEMBLIES
 37. THROTTLE CONTROL ASSEMBLY W/ GRIPS
 45. FUEL TANK TRIM VERSION 2
 19. CLUTCH ASSEMBLY
 43. FUEL PUMP ASSEMBLY
 5. CRANKSHAFT ASSEMBLY W/ PISTONS AND FLYWHEEL
 54. ELECTRICAL - MAIN WIRING HARNESS - 1

Simplify Maintenance: Having detailed parts information at your fingertips makes maintaining your  FLSTF SOFTAIL FAT BOY (BX) easier than ever.

If you're unsure which part you need information on or have questions about the parts for your  FLSTF SOFTAIL FAT BOY (BX), please refer to your harley service manual or contact us for help.