Plymouth GTX Brake Bulb Size

The Plymouth GTX brake light utilizes 1034 and 1157 bulb sizes for the lighting components. Data for the specific bulbs covers the period from 1967 through 1971.

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

YearsBulb Size
1969-19711157
1967-19681034

Bulb Specifications

Description Bulb Size
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

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