Volvo WI Headlight Bulb Size

The Volvo WI headlight bulb size specifications include 9004 and H6024 bulb sizes for both high beam and low beam applications. The replacement chart covers vehicle production years from 1996 to 1998 with corresponding bulb size data.

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
1998	9004	HB1	Check Price
1996-1997	9004 (With Halogen Capsule Headlamps)	HB1	Check Price
1996-1997	H6024 (With Sealed Beam Headlamps)	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
1998	9004	HB1	Check Price
1996-1997	9004 (With Halogen Capsule Headlamps)	HB1	Check Price
1996-1997	H6024 (With Sealed Beam Headlamps)	H6024	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament halogen bulb with P29t base. 12V, 65W/45W.	9004	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

Other Locations

Additional Notes

The 9004 is a dual-filament halogen bulb, meaning a single unit contains two filaments: one rated at 65W for high beam and one at 45W for low beam. This design allows it to serve both functions within one housing.
The 9004 uses a P29t base and operates at 12V. It conforms to ANSI standards applicable in the United States and Canada.
The H6024 is a 7-inch round sealed beam unit that operates at 12V. Unlike a conventional replaceable bulb, the entire sealed beam assembly is replaced as one unit when it fails.
The H6024 also conforms to ANSI standards for the United States and Canada, placing it in the same regulatory framework as the 9004 despite being a fundamentally different type of lighting unit.
Because the 9004 handles both high and low beam functions through its dual filaments, the Volvo WI (1996-1998) with halogen capsule headlamps lists the same bulb size for both the high beam and low beam positions.
The 1996-1997 Volvo WI was available with either halogen capsule headlamps or sealed beam headlamps, and the correct bulb type is determined strictly by which headlamp system is installed on the vehicle. The 9004 and H6024 are not interchangeable with each other.
By 1998, the specifications list only the 9004 with no sealed beam variant, indicating that the 1998 model year does not carry a sealed beam headlamp option in these specifications.