Mercury Comet Engine Compartment Light Bulb Size

The Mercury Comet engine compartment light utilizes bulb sizes 89, 631, 93, and P21W depending on the specific application for the vehicle. Data for the lighting components covers the range from 1960 through 1977.

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

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

YearsUS TypeEU TypeShop
1973-19778989Check Price
1966-1969631631Check Price
19651156P21WCheck Price
19649393Check Price
1961-19631156P21WCheck Price
19609393Check Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.89Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.631Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.P21WCheck Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.1156Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.93Check Price

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