Ski-Doo Mach 1 Brake Bulb Size

The Ski-Doo Mach 1 brake bulb uses a 1157 size bulb for this snowmobile model. The replacement chart covers vehicle production years spanning 1996 to 2000 with corresponding bulb size specifications.

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
1996-2000	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 Mach 1 uses the 1157 bulb for the brake light position across the 1996-2000 model years.
The 1157 is an ANSI-standardized bulb type recognized in both the United States and Canada, operating on a 12-volt electrical system.
It is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, one rated at 21 watts and the other at 5 watts, allowing it to serve both a high-intensity and a low-intensity function.
The base type is BAY15d, a bayonet-style mount with two offset pins that prevent incorrect insertion, as the pin positions are not symmetrical.
The offset pin arrangement of the BAY15d base is a deliberate fitment control, as it ensures the correct filament is aligned with the corresponding circuit contact in the socket.
Because the 1157 is a dual-filament type, substituting it with a single-filament equivalent such as the 1156 would result in the loss of one lighting function despite the similar physical form of the base.