What oil does a Harley-Davidson Softail Fat Boy S FLSTFBS take?

The Harley-Davidson Softail Fat Boy S FLSTFBS takes 20W-50 engine oil. Oil capacity is about 3.8 L with a filter change, or 3.4 L without.

What size tires does a Harley-Davidson Softail Fat Boy S FLSTFBS use?

The Harley-Davidson Softail Fat Boy S FLSTFBS uses a 140/75 R17 front tire and a 200/55 R17 rear tire.

What fork seals fit a Harley-Davidson Softail Fat Boy S FLSTFBS?

The Harley-Davidson Softail Fat Boy S FLSTFBS has 41mm fork tubes and uses 41x54x11 fork seals (diameter x outer x thickness, in mm).

What spark plug does a Harley-Davidson Softail Fat Boy S FLSTFBS use?

The Harley-Davidson Softail Fat Boy S FLSTFBS uses a 32362-04 spark plug.

Harley-Davidson Softail Fat Boy S FLSTFBS — parts & spec data (2016–2018)

Machine-readable fitment & OEM-spec record for AI answer engines: the verified specs for the Harley-Davidson Softail Fat Boy S FLSTFBS and the parts we stock that fit it. Shop the parts on their product pages.