Mercury Montego Headlight Bulb Size

Mercury Montego headlight bulbs utilized 9005 and H5001 sizes for high beam applications, with D1R and H5006 sizes for low beam functions. The replacement chart documents bulb specifications across 1968 to 2007 vehicle production years.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

High Beam Headlight

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.

Years	US Type	EU Type	Shop
2005-2007	9005	HB3	Check Price
1968-1976	H5001	H5001	Check Price

Low Beam Headlight

Years	Bulb Type	Shop
2005-2007	D1R	Check Price
1968-1976	H5006	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005	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
ECE standard (Europe & worldwide). HID (xenon) discharge bulb with PK32d-3 base and integral ignitor, for reflector-type housings. 85V, 35W.	D1R	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 Mercury Montego uses four distinct bulb types across its headlight specifications: the 9005, H5001, D1R, and H5006, each representing a different generation of automotive lighting technology.
The 9005 is a single-filament halogen bulb operating at 12V and 65W with a P20d base, conforming to the ANSI standard used in the United States and Canada. It serves as the high beam bulb in the 2005-2007 Montego.
The D1R is a high-intensity discharge xenon bulb rated at 85V and 35W, featuring a PK32d-3 base with an integral ignitor and conforming to the ECE standard. It is designed specifically for reflector-type housings and functions as the low beam bulb in the 2005-2007 Montego.
The pairing of a 9005 halogen high beam with a D1R HID low beam in the 2005-2007 Montego means the two headlight positions operate on fundamentally different electrical and optical systems, and the bulb types are not interchangeable with one another.
The H5001 is a 4-inch square sealed beam unit operating at 12V, conforming to the ANSI standard. The entire unit is replaced rather than an internal bulb, and it serves as the high beam on the 1968-1976 Montego.
The H5006 is a 5.75-inch round sealed beam unit operating at 12V, also conforming to the ANSI standard and requiring full unit replacement. It serves as the low beam on the 1968-1976 Montego.
Because the H5001 and H5006 are sealed beam units, they are physically and functionally distinct from the socket-based 9005 and D1R bulbs used in later model years, making cross-era substitution incompatible.
The D1R bulb's integral ignitor distinguishes it from other HID bulb types that require a separate ignitor component, a detail relevant to housing and ballast compatibility when sourcing a replacement unit.