Suzuki Motorcycle LT-A750 KingQuad AXi Tail Light Bulb Size

Suzuki Motorcycle LT-A750 KingQuad AXi tail light requires a P21/5W bulb size for proper illumination. The replacement chart covers 2008 through 2019 model years 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
2011-2019	P21/5W
2008-2009	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 P21/5W is the sole tail light bulb type specified for the Suzuki LT-A750 KingQuad AXi across all listed model years from 2008-2019.
The P21/5W is a dual-filament bulb, with one filament rated at 21 watts for braking or turn signal functions and a second filament rated at 5 watts for the running light function.
The bulb operates on a 12-volt electrical system, consistent with standard automotive and powersports vehicle architecture.
The P21/5W uses a BAY15d bayonet base, which is an offset twin-pin fitting. The asymmetric pin placement of the BAY15d base prevents incorrect installation orientation, ensuring the two filaments are connected to the correct circuits.
The P21/5W is governed by ECE regulations, a standard recognized across Europe and numerous other markets worldwide, indicating broad international availability of this bulb type.
The BAY15d base is not interchangeable with the BA15d base, which shares a similar form but uses symmetrically placed pins. Substituting a BA15d bulb in a BAY15d socket would result in incorrect fitment for the LT-A750 KingQuad AXi tail light.