Ski-Doo MX Z 440 X Tail Light Bulb Size

The Ski-Doo MX Z 440 X tail light requires a bulb size of 1157 for the lighting system. Data for the specified component covers the range from 2001 to 2003.

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
2001-2003	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 1157 is the tail light bulb size specified for the Ski-Doo MX Z 440 X across the 2001-2003 model years.
The 1157 is an ANSI-standardized bulb type used in the United States and Canada, operating on a 12-volt electrical system.
As a dual-filament bulb, the 1157 carries two separate wattage ratings: 21W for the primary filament and 5W for the secondary filament, allowing it to serve both braking and running light functions within a single unit.
The 1157 uses a BAY15d bayonet base, a two-pin offset base design that physically prevents incorrect insertion by positioning the two pins at different heights, ensuring polarity alignment during installation.