Kawasaki KVF300 Brute Force Tail Light Bulb Size

The Kawasaki KVF300 Brute Force tail light uses a P21/5W bulb size for replacement purposes. The chart covers vehicle production spanning 2012 to 2022 with corresponding bulb 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
2021-2022	P21/5W
2012-2018	P21/5W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W

Other Locations

Additional Notes

The Kawasaki KVF300 Brute Force uses the P21/5W bulb for its tail light across the 2012-2018 and 2021-2022 model years covered in these specifications.
The P21/5W is a dual-filament bulb, meaning it contains two separate filaments within a single glass envelope. The higher 21W filament typically serves the brake light function, while the lower 5W filament handles the running or tail light function.
The P21/5W operates on a 12V electrical system, which is standard for powersports vehicles in this class.
This bulb follows the ECE (Economic Commission for Europe) standard, a regulatory framework recognized across Europe and many other markets worldwide.
The P21/5W uses a BAY15d bayonet base. The BAY15d designation indicates an offset dual-contact base, where the two pins are positioned at different heights to prevent incorrect installation orientation.
Because the BAY15d base is offset, it is not interchangeable with the BA15d base, which shares the same pin spacing but without the height offset. Substituting one for the other is not possible without modification.