Ski-Doo Summit 800 X Tail Light Bulb Size

The Ski-Doo Summit 800 X tail light requires a bulb with the unique size 1157 for proper installation. Available data covers the specific range from 2001 through 2004.

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
2008-2010	1157	P21/5W	Check Price
2001-2004	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 sole tail light bulb type listed across all model years of the Ski-Doo Summit 800 X covered in these specifications, spanning 2001-2004 and 2008-2010.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single glass envelope, one rated at 21 watts and the other at 5 watts, allowing it to serve both a brighter stop light function and a dimmer running light function simultaneously.
The bulb operates on a 12-volt electrical system, which is standard for powersports and automotive applications of this type.
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 along the base.
The 1157 designation follows the ANSI standardization system recognized in both the United States and Canada, meaning bulbs carrying this designation from different manufacturers share the same electrical and physical characteristics.
Because the BAY15d base is specific to dual-filament applications, single-filament bayonet bulbs such as the 1156, which use a BAY15s base with pins at equal heights, are not interchangeable with the 1157 despite their similar appearance.