Ski-Doo Tundra Xtreme E-TEC 600 HO Brake Bulb Size

The Ski-Doo Tundra Xtreme E-TEC 600 HO brake uses a P21/5W bulb size for the lighting component. Data for the specified equipment covers the period from 2018 to 2019.

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
2012-2019	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 specified for the Ski-Doo Tundra Xtreme E-TEC 600 HO across the 2012-2019 model years.
P21/5W is a dual-filament bulb, meaning it contains two separate filaments within a single glass envelope. The higher 21W filament serves the brake or stop function, while the lower 5W filament handles a secondary role such as running or tail light operation.
The bulb operates on a 12V electrical system, which is standard for most powersport and automotive applications.
P21/5W uses a BAY15d bayonet base. The BAY15d designation indicates an offset dual-contact base, where the two pins are positioned at different heights to prevent incorrect installation of a single-filament bulb in place of a dual-filament one.
The P21/5W designation follows ECE (Economic Commission for Europe) standards, meaning the bulb is regulated for use in European and worldwide markets under those lighting regulations.
Because the BAY15d base is offset, a single-filament BAY15s bulb is not a direct physical substitute, as the pin geometry differs between the two base types.