Peugeot 604 Headlight Bulb Size

The Peugeot 604 headlight bulb size chart specifies high beam bulb options of H4651 and H5001, along with low beam bulb sizes of H4652, H4656, and H5006 for this vehicle model. The replacement chart covers 1977 to 1984 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.

High Beam Headlight

Years	Bulb Type	Shop
1982-1984	H4651	Check Price
1980	H4651	Check Price
1979	H5001	Check Price
1977-1978	H4651	Check Price

Low Beam Headlight

Years	Bulb Type	Shop
1982-1984	H4652	Check Price
1980	H4656	Check Price
1979	H5006	Check Price
1977-1978	H4652	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H4651	Check Price
ANSI standard (US & Canada). 4-inch square sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H5001	Check Price
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit, variant of H4651. Not a replaceable bulb — the entire unit is replaced. 12V.	H4652	Check Price
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H4656	Check Price
ANSI standard (US & Canada). 5.75-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H5006	Check Price

Other Locations

Additional Notes

The H4651 is the most frequently specified bulb across the Peugeot 604's high beam positions, covering model years 1977-1978 and 1982-1984. It is a 4x6-inch rectangular sealed beam unit built to ANSI standards for the US and Canadian markets, operating at 12V.
The H4652 is the low beam counterpart to the H4651 and shares the same 4x6-inch rectangular sealed beam format. It appears across the same years as the H4651 in the low beam position, making it the most recurrent low beam specification in the 604's fitment data.
All bulb types listed for the Peugeot 604 are sealed beam units, meaning the lens, reflector, and filament are fused into a single assembly. When the filament fails, the entire unit requires replacement rather than just an internal bulb.
The 1979 model year stands apart from all other listed years by specifying the H5001 for high beam and the H5006 for low beam. The H5001 is a 4-inch square sealed beam unit, while the H5006 is a 5.75-inch round sealed beam unit, both differing in shape from the rectangular units used in surrounding years.
The 1980 model year uses the H4656 for low beam rather than the H4652 found in adjacent years. Although both are 4x6-inch rectangular sealed beam units operating at 12V, they carry distinct ANSI designations and are not listed as interchangeable.
The H4652 is described as a variant of the H4651, yet the two carry separate ANSI designations assigned to distinct beam functions. The H4651 is designated for high beam use and the H4652 for low beam use, and substituting one for the other would not satisfy the correct beam function.
All five bulb types in these specifications conform to ANSI standards recognized in the US and Canada. This standardization means physically compatible replacements from multiple manufacturers are generally available, provided the correct ANSI designation is matched.
The 1981 model year does not appear in either the high beam or low beam data for the Peugeot 604, leaving 1977-1980 and 1982-1984 as the years represented in these specifications.