Harley-Davidson FXD Dyna Super Glide Brake Bulb Size

Harley-Davidson FXD Dyna Super Glide brake bulb uses a 198 size bulb for this motorcycle model. The replacement chart covers 1995 to 1998 vehicle production years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1995-1998	198

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W.	198

Other Locations

Additional Notes

The 198 bulb is the brake bulb size specified for the Harley-Davidson FXD Dyna Super Glide across the 1995-1998 model years.
The 198 bulb follows the ANSI standard, which is the American National Standards Institute classification system used in the United States and Canada to define bulb performance and dimensional criteria.
It is a T5 miniature wedge bulb, where "T5" denotes a tubular bulb body with a width of 5/8 inch, and the wedge base type means the glass envelope itself acts as the retaining mechanism rather than a separate metal base.
The 198 bulb operates at 12 volts and draws 2 watts, placing it among the lower-wattage bulbs in automotive and motorcycle applications, consistent with indicator and brake light use on smaller lighting assemblies.
The wedge base format of the 198 bulb means fitment depends on the socket accepting that specific base style; substituting a bulb with a different base type, such as a bayonet or screw base, would be incompatible regardless of voltage rating.