Suzuki Motorcycle LT-F500F Vinson 500 4x4 Brake Bulb Size

The Suzuki Motorcycle LT-F500F Vinson 500 4x4 brake uses a P21/5W bulb size for the lighting system. Data for the specific component covers the range from 2003 to 2007.

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	US Type	EU Type	Shop
2003-2007	1157	P21/5W	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W.	P21/5W	Check Price
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157	Check Price

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Additional Notes

The Suzuki LT-F500F Vinson 500 4x4 uses the P21/5W bulb for its brake light across the 2003-2007 model years.
The P21/5W is a dual-filament bulb, with one filament rated at 21 watts for the brake/stop function and a second filament rated at 5 watts, typically used for a running or tail light function within the same housing.
The P21/5W operates on a 12-volt electrical system, which is standard for this class of vehicle.
The bulb uses a BAY15d bayonet base, a two-pin offset base design where the two pins are positioned at different heights to ensure the bulb can only be inserted in the correct orientation, preventing filament misalignment.
The P21/5W is governed by ECE (Economic Commission for Europe) standards, meaning it is recognized and used across European and international markets rather than being exclusive to North American SAE standards.
Because the BAY15d base is offset, it is not interchangeable with the similarly named BA15d base, which has pins at equal heights. Substituting one for the other is not possible without modification.