Plymouth Cricket headlight bulbs utilize 2 distinct sizes: the high beam requires an H5001 bulb size while the low beam requires an H5006 bulb size. The replacement chart covers vehicle production spanning 1971 to 1974 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Plymouth Cricket uses the H5001 bulb type for high beam headlights across all model years from 1971-1974.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards recognized in both the United States and Canada. As a sealed beam, the entire unit is replaced rather than an internal filament or capsule.
Low beam headlights on the Cricket use the H5006 across the full 1971-1974 production run.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and built to the same ANSI standard as the H5001. Like the H5001, it is a non-serviceable sealed assembly requiring full unit replacement when failed.
The H5001 and H5006 are not interchangeable with each other. One is a 4-inch square form factor and the other is a 5.75-inch round form factor, meaning the two units occupy physically distinct housings and serve separate beam functions.
Both sealed beam types follow ANSI standardization, which means units from different manufacturers conforming to the same ANSI designation share the same electrical and physical interface, allowing cross-brand substitution within the same standard.