Mercury Monterey Turn Signal Bulb Size

Mercury Monterey front and rear turn signal bulbs utilize 3457NA, 1034NA, 1157NA, 4157, and 3157 bulb sizes across various model generations. The replacement chart covers 1950 through 2007 production years with corresponding bulb size specifications.

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

Front Turn Signal

YearsBulb Size
2004-20073457NA
19741034NA
19731157NA
19721034NA
1970-19711157
1967-19691034NA
19661157NA
1964-19651034NA
19631157
1956-19621034
1950-19551154

Rear Turn Signal

YearsBulb Size
2006-20074157
2004-20053157
1963-19741157
1956-19621034
1950-19551154

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.3457NA
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
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.1157
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.1034
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Older variant of 1157. 6V/12V.1154
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.4157
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.3157

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