Honda Motorcycle NSS250 Reflex Turn Signal Bulb Size
Honda Motorcycle NSS250 Reflex front turn signal bulbs measure 7443 in size, while rear turn signal bulbs measure 7440 in size. The replacement chart covers 2001 through 2007 model 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.
The Honda Motorcycle NSS250 Reflex uses the 7443 bulb for the front turn signal across all model years from 2001-2007.
The 7443 is a dual-filament wedge bulb of the T20 type, rated at 12V with a wattage split of 21W/5W, conforming to ANSI standards recognized in the US and Canada.
The rear turn signal on the NSS250 Reflex uses the 7440 bulb across all model years from 2001-2007.
The 7440 is a single-filament wedge bulb of the T20 type, rated at 12V and 21W, also conforming to ANSI standards recognized in the US and Canada.
Both the 7443 and 7440 share the same T20 wedge base form factor, though the 7443 carries two filaments while the 7440 carries only one.
Because the 7443 has a dual-filament design and the 7440 does not, the two bulbs are not interchangeable despite sharing the same base type. Installing a 7440 in a front socket designed for a 7443 would result in the loss of one filament's function.
The secondary 5W filament in the 7443 is the lower-intensity filament, typically serving a running or parking light function alongside the primary 21W turn signal filament.