Suzuki Motorcycle LT-F160 QuadRunner Brake Bulb Size

The Suzuki Motorcycle LT-F160 QuadRunner brake utilizes a P21/5W bulb size for the lighting component. Data for the specific bulb application covers the period from 2003 through 2004.

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
2003-2004	P21/5W

Bulb Specifications

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

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Additional Notes

The P21/5W is the brake bulb type specified for the Suzuki Motorcycle LT-F160 QuadRunner across the 2003-2004 model years.
The P21/5W is a dual-filament bulb, with the 21W filament handling brake and stop signals and the 5W filament serving as a running light.
This bulb operates on a 12V electrical system and uses a BAY15d bayonet base, which features offset pins to prevent incorrect installation orientation.
The P21/5W is governed by ECE (Economic Commission for Europe) standards, giving it broad acceptance across European and international markets.
The BAY15d base is not interchangeable with single-filament bayonet bases such as the BA15s, as the offset pin configuration is specific to dual-filament applications.