Chevrolet Monte Carlo Headlight Bulb Size

Chevrolet Monte Carlo high beam headlight bulbs utilize H9, 9005, or 9004 sizes, while low beam headlight bulbs use H11, 9006, or 9004 sizes depending on model generation. The replacement chart covers vehicle production years spanning 1970 to 2007 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

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
2006-2007	H9	H9	Check Price
1995-2005	9005	HB3	Check Price
1986-1988	9004 (With Halogen Capsule Headlamps)	HB1	Check Price
1986-1988	H4651 (With Sealed Beam Headlamps)	H4651	Check Price
1980-1985	H4651	H4651	Check Price
1978-1979	H6054	H6054	Check Price
1976-1977	H4651	H4651	Check Price
1970-1975	H6024	H6024	Check Price

Low 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
2006-2007	H11	H11	Check Price
1995-2005	9006	HB4	Check Price
1988	9004 (With Halogen Capsule Headlamps)	HB1	Check Price
1988	H4652 (With Sealed Beam Headlamps)	H4652	Check Price
1987	9004 (With Halogen Capsule Headlamps)	HB1	Check Price
1987	H4656 (With Sealed Beam Headlamps)	H4656	Check Price
1986	9004 (With Halogen Capsule Headlamps)	HB1	Check Price
1986	H4652 (With Sealed Beam Headlamps)	H4652	Check Price
1984-1985	H4656	H4656	Check Price
1981-1983	H4652	H4652	Check Price
1980	H4656	H4656	Check Price
1978-1979	H6054	H6054	Check Price
1976-1977	H4656	H4656	Check Price
1970-1975	H6024	H6024	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-5 base. Also approved in the US. 12V, 65W.	H9	Check Price
ANSI standard (US & Canada). Single-filament halogen bulb with P20d base. 12V, 65W.	9005	Check Price
ANSI standard (US & Canada). Dual-filament halogen bulb with P29t base. 12V, 65W/45W.	9004	Check Price
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). 5x7-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6054	Check Price
ANSI standard (US & Canada). 7-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6024	Check Price
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-2 base. Also approved in the US. 12V, 55W.	H11	Check Price
ANSI standard (US & Canada). Single-filament halogen bulb with P22d base. 12V, 55W.	9006	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

Other Locations

Additional Notes

The 9005 and 9006 bulbs are the most frequently specified types across the Chevrolet Monte Carlo headlight data, covering high beam and low beam positions respectively for the 1995-2005 model years. Both follow the ANSI standard used in the US and Canada, operate at 12V, and use single-filament halogen technology, with the 9005 rated at 65W and the 9006 at 55W.
For the 2006-2007 Monte Carlo, the high beam position shifted to the H9 and the low beam to the H11, both ECE-standard halogen bulbs that carry US approval. The H9 operates at 65W and the H11 at 55W, mirroring the wattage relationship of the 9005 and 9006 they replaced, though the two sets use different base types and are not interchangeable with each other.
The 9004 is a dual-filament halogen bulb rated at 65W for high beam and 45W for low beam within a single unit, and it served both beam functions simultaneously in the 1986-1988 Monte Carlo equipped with halogen capsule headlamps. Its P29t base is distinct from the single-filament 9005 and 9006 bases, making cross-substitution between these types incompatible.
The 1986-1988 Monte Carlo carried two distinct headlamp system options: halogen capsule headlamps using the 9004 bulb, and sealed beam headlamps requiring separate H4651-series units for high beam and H4652 or H4656 units for low beam. These two systems are not interchangeable, as they represent fundamentally different headlamp assemblies.
The H4651, H4652, and H4656 are all 4x6-inch rectangular sealed beam units following the ANSI standard. In sealed beam construction, the lens, reflector, and filament form a single sealed unit, so the entire assembly is replaced rather than an internal bulb. The H4651 covered high beam duties while H4652 and H4656 served low beam positions across various model years from 1976-1988.
The H6054 is a 5x7-inch rectangular sealed beam unit specified for the 1978-1979 Monte Carlo in both high and low beam positions. Its larger physical format distinguishes it from the 4x6-inch H4651-series units used in surrounding model years, and the two sealed beam sizes are not physically interchangeable.
The H6024 is a 7-inch round sealed beam unit specified for the 1970-1975 Monte Carlo across both beam positions. Like all sealed beam types in these specifications, it operates at 12V and is replaced as a complete unit rather than by an internal component.
The 9005 and H9 share a 65W rating and single-filament design but use different base connectors, P20d and PGJ19-5 respectively, which prevents direct substitution between them. The same incompatibility applies to the 9006 and H11 on the low beam side, where the P22d and PGJ19-2 bases differ despite both types being rated at 55W.