Ski-Doo MX Z 670 Tail Light Bulb Size

The Ski-Doo MX Z 670 tail light requires a bulb with the specific 1157 size for proper operation. Data for the requested component covers the period from 1996 through 1999.

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
1996-1999	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 MX Z 670 uses the 1157 bulb for its tail light across the 1996-1999 model years.
The 1157 is an ANSI-standardized type, meaning its physical and electrical specifications are defined by a recognized North American standard shared across the US and Canada.
This bulb type carries a dual-filament design, which allows it to serve two separate lighting functions within a single housing, typically a running light and a brake light.
The 1157 operates on a 12V system with a wattage split of 21W and 5W, where the higher wattage filament corresponds to the brighter brake light function and the lower to the running light.
The base type is a BAY15d bayonet mount, a two-pin offset configuration that physically prevents incorrect insertion of a single-filament substitute, since the pins are positioned asymmetrically.
Because the BAY15d base is offset, a visually similar single-filament bulb with a symmetrical BAY15s base is not a compatible replacement, as it would not seat correctly and would not support dual-filament operation.