Ski-Doo MX Z 1200 Tail Light Bulb Size

The Ski-Doo MX Z 1200 tail light uses a P21/5W bulb size for optimal lighting performance. Replacement bulb specifications are documented in the chart covering 2009 to 2011 production years.

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
2009-2011	P21/5W

Bulb Specifications

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

Other Locations

Additional Notes

The P21/5W is a dual-filament bulb operating on a 12V system, with one filament rated at 21W and a second rated at 5W, allowing it to serve two distinct lighting functions within a single housing.
The P21/5W uses a BAY15d bayonet base, which features offset pins to ensure correct orientation during installation, preventing the filaments from being connected to the wrong circuit.
The P21/5W designation follows the ECE (Economic Commission for Europe) standard, a regulatory framework recognized across Europe and numerous other markets worldwide.
The Ski-Doo MX Z 1200 uses the P21/5W bulb for the tail light across the 2009-2011 model years, indicating a consistent fitment specification throughout that production period.
Because the BAY15d base uses an asymmetric pin arrangement, substituting a single-pin BA15s base bulb is not physically compatible, even if the wattage ratings appear similar.