Ski-Doo MX Z 440 Fan Brake Bulb Size

The Ski-Doo MX Z 440 Fan brake utilizes a 1157 bulb size for the lighting component. Data for the specified vehicle covers a range from 1996 through 2001.

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
1996-2001	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 brake bulb size specified for the Ski-Doo MX Z 440 Fan across the 1996-2001 model years.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, one rated at 21W and the other at 5W.
The higher 21W filament typically serves the brake or stop function, while the lower 5W filament handles the tail or running light function.
The 1157 operates on a 12V electrical system, which is standard for most powersport and automotive applications.
The bulb uses a BAY15d bayonet base, a two-pin offset base design that prevents incorrect insertion by positioning the two pins at different heights along the base.
The 1157 is classified under the ANSI standard and is recognized in both the United States and Canada under that designation.
The BAY15d base is specific to dual-filament applications and is not interchangeable with single-filament bayonet bases such as the BA15s, which would affect fitment if an incorrect replacement is selected.