Kawasaki KLF250 Bayou Brake Bulb Size

Kawasaki KLF250 Bayou brake bulb utilizes a 1157 size bulb for rear lighting applications. The replacement chart covers 2003 through 2011 production 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.

Bulb Size by Year Range

Years	Bulb Size
2003-2011	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

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Additional Notes

The Kawasaki KLF250 Bayou uses the 1157 bulb for the brake light across all specified model years, spanning 2003-2011.
The 1157 is an ANSI-standardized bulb type recognized across the United States and Canada, meaning it conforms to a defined set of electrical and physical parameters shared by all compliant manufacturers.
The 1157 is a dual-filament bulb, which allows it to serve two distinct brightness levels within a single housing, a design commonly used in brake and tail light applications where both running light and stop light functions are required.
The bulb operates on a 12-volt system with a wattage rating of 21W on the high-intensity filament and 5W on the low-intensity filament, corresponding to the stop and running light functions respectively.
The 1157 uses a BAY15d bayonet base, a two-pin offset base type where the two pins are positioned at different heights to prevent incorrect installation orientation.
The BAY15d base is a widely distributed fitment standard, and 1157 bulbs from different manufacturers are generally interchangeable as long as the ANSI 1157 designation and BAY15d base are both present.