Ski-Doo MX Z 550 Fan Tail Light Bulb Size

The Ski-Doo MX Z 550 Fan tail light requires a bulb with the specific 1157 size for proper installation and function. Available information covers the period from 2003 through 2008 for the specified component.

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
2003-2008	1157

Bulb Specifications

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

Other Locations

Additional Notes

The Ski-Doo MX Z 550 Fan uses the 1157 bulb for its tail light across the 2003-2008 model years.
The 1157 is an ANSI-standardized bulb type recognized across the United States and Canada, establishing a consistent specification for fitment.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, allowing it to serve both running light and brake light functions from one unit.
The bulb operates on a 12-volt electrical system and carries a dual-wattage rating of 21W and 5W, corresponding to its high-intensity brake filament and lower-intensity running light filament respectively.
The 1157 uses a BAY15d bayonet base, a two-pin offset base design that physically prevents incorrect insertion, as the two pins are positioned at different heights to enforce proper orientation.
The BAY15d base is a widely distributed standard, and 1157 bulbs sourced from different manufacturers are generally interchangeable provided the voltage and wattage ratings match the original specification.