Kawasaki KLX250 Tail Light Bulb Size

The Kawasaki KLX250 tail light requires a 1157 bulb size for replacement operations across the specified motorcycle model. The replacement chart covers vehicle production spanning 2006 to 2020.

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
2018-2020	1157	P21/5W	Check Price
2012-2014	1157	P21/5W	Check Price
2009-2010	1157	P21/5W	Check Price
2006-2007	1157	P21/5W	Check Price

Bulb Specifications

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

Other Locations

Additional Notes

The 1157 is the tail light bulb type specified for the Kawasaki KLX250 across all listed model years, spanning 2006-2020.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope. One filament operates at 21W for braking or turn signal functions, while the other operates at 5W for running light functions.
The 1157 uses a BAY15d bayonet base, which is an offset twin-pin base. The two pins are positioned at different heights, a design that prevents incorrect insertion and ensures the filaments align with their intended circuits.
The 1157 operates at 12V, consistent with standard automotive and motorcycle electrical systems.
The 1157 designation follows ANSI standards and applies to the US and Canadian markets.
Because the 1157 is a dual-filament type, single-filament substitutes such as the 1156 are not interchangeable, as they lack the second filament required for the combined stop and running light circuit.