VPG MV-1 Turn Signal Bulb Size

The VPG MV-1 front turn signal bulb utilizes either 1034NA or 1157NA size bulbs for replacement applications. The replacement chart covers vehicle production spanning 2011 to 2012.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Turn Signal

Years	Bulb Size
2012	1034NA
2011	1157NA

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Variant of 1157. 12V, 21/5W.	1034NA
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 21W/5W.	1157NA

Other Locations

Additional Notes

The VPG MV-1 front turn signal uses dual-filament bulbs across both listed model years, with the 2011 model year specifying the 1157NA and the 2012 model year specifying the 1034NA.
Both the 1157NA and 1034NA are ANSI-standardized bulb types recognized in the US and Canada, each operating at 12V with a 21W/5W dual-filament output.
The dual-filament design in both bulb types allows a single bulb to serve two lighting functions, typically combining a brighter filament for turn signaling with a dimmer filament for running or parking light duty.
Both bulb types share the BAY15d bayonet base, a double-contact offset-pin base that physically locks the bulb into the socket and ensures correct polarity alignment for dual-filament operation.
The 1034NA is described as a variant of the 1157, meaning the two types are closely related in design, though they are not listed as interchangeable for the MV-1 front turn signal position.
Both bulb types feature natural amber glass, which produces the amber turn signal color directly from the bulb rather than relying on a colored lens to filter white light.