Polaris 600 Touring Brake Bulb Size

The Polaris 600 Touring brake light requires bulb size 2458, 3157, or 921 depending on the specific version of the machine. Data for the bulb sizes covers the range from 2000 to 2006.

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
2004-2006	3157	P27/7W	Check Price
2000-2003	921	W16W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157	Check Price
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921	Check Price

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Additional Notes

The Polaris 600 Touring uses two distinct brake bulb types across its model years: the 3157 for 2004-2006 and the 921 for 2000-2003.
The 3157 is a dual-filament wedge bulb classified under the T25 form factor, operating at 12V with a wattage split of 27W for the high-intensity filament and 7W for the low-intensity filament.
The dual-filament design of the 3157 allows a single bulb to serve both a steady running light function and a brighter brake signal function within the same housing.
The 921 is a single-filament wedge bulb classified under the T15 form factor, rated at 12V and 16W, which means it produces only one fixed level of output.
Both the 3157 and the 921 conform to ANSI standards applicable in the United States and Canada.
The T25 and T15 designations refer to the outer envelope width of the bulb expressed in eighths of an inch, making the 3157 physically larger than the 921 and incompatible with sockets sized for the smaller T15.
The shift from the 921 to the 3157 between the 2003 and 2004 Polaris 600 Touring represents a change in both socket type and filament count, meaning the two bulbs are not interchangeable.