Harley-Davidson XG750 Street 750 Turn Signal Bulb Size

Harley-Davidson XG750 Street 750 front turn signal bulbs use 5008 or 232 size, while rear turn signal bulbs use P21W, 232, or 5008 size. The replacement chart covers 2015 through 2020 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.

Front Turn Signal

Years	Bulb Type	Shop
2016	5008	Check Price
2015	232	Check Price

Rear Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2017-2020	1156	P21W	Check Price
2016	232	232	Check Price
2015	5008	5008	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V.	5008	Check Price
ANSI standard (US & Canada). Festoon bulb with SV8.5 base. 12V, 3W.	232	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156	Check Price

Other Locations

Additional Notes

The Harley-Davidson XG750 Street 750 turn signal specifications reference three distinct bulb types across its front and rear positions: the 5008, the 232, and the P21W.
The 5008 and 232 follow the ANSI standard used in the United States and Canada, while the P21W follows the ECE standard applied in Europe and other world markets. This distinction reflects regional regulatory differences in automotive lighting.
Both the 5008 and the P21W use a BA15s bayonet base, meaning the two bulbs share the same physical mounting interface despite belonging to different standards. However, the 5008 operates at a significantly lower wattage than the P21W's rated 21W output, which makes them electrically incompatible as direct substitutes without accounting for the wattage difference.
The 232 is a festoon-type bulb with an SV8.5 base, a form factor that is physically distinct from the BA15s bayonet base used by the 5008 and P21W. It is rated at 12V and 3W.
All three bulb types operate on a 12V electrical system, consistent with standard motorcycle electrical architecture.
On the Harley-Davidson XG750 Street 750, the front turn signal position used the 5008 in 2016 and the 232 in 2015, indicating that the two model years do not share the same front turn signal bulb type.
The rear turn signal position used the P21W across the 2017-2020 model years, while the 2016 rear position used the 232 and the 2015 rear position used the 5008.
The front and rear turn signal positions on the 2015 and 2016 models do not use matching bulb types, as each position specifies a different bulb for those years.