Ski-Doo Summit 600 Tail Light Bulb Size

The Ski-Doo Summit 600 tail light requires a bulb with the specific 1157 size for proper operation. Data for the required component covers the period from 1999 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
2010	1157	P21/5W	Check Price
1999-2006	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 specified for the Ski-Doo Summit 600 across all listed model years.
The 1157 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical standards rather than being a proprietary specification.
This bulb is a dual-filament type, operating at 12 volts with two wattage ratings: 21W for the higher-intensity filament and 5W for the lower-intensity filament. In tail light applications, the lower filament typically serves as a running light while the higher filament activates under braking.
The 1157 uses a BAY15d bayonet base, which is an offset twin-pin mount. The two pins are positioned at different heights, making the base directional and preventing incorrect installation orientation.
The BAY15d base design is a fitment-critical detail. Bulbs with a BAY15d base are not interchangeable with those using a BA15d base, which has pins at equal heights, despite the two types sharing a similar overall form.
The 1157 specification applies to model years 1999-2006 and 2010, covering all years present in the provided data.