Nissan 610 high beam headlight bulbs use H5001 size while low beam headlight bulbs use H5006 size. The replacement chart covers 1973 to 1976 vehicle 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.
The Nissan 610 uses the H5001 bulb size for high beam headlights across all documented model years, spanning 1973-1976.
The H5001 is a 4-inch square sealed beam unit operating at 12V. It conforms to ANSI standards applicable in the United States and Canada.
As a sealed beam unit, the H5001 does not contain a replaceable bulb element. The entire assembly is replaced when the unit fails.
Low beam headlights on the Nissan 610 use the H5006 bulb size across the same 1973-1976 model year range.
The H5006 is a 5.75-inch round sealed beam unit, also rated at 12V and conforming to the same ANSI standards as the H5001.
Like the H5001, the H5006 is a sealed beam unit requiring full assembly replacement rather than individual bulb replacement.
The H5001 and H5006 are not interchangeable with each other. The square format of the H5001 and the round format of the H5006 correspond to distinct high beam and low beam housings respectively.