Ford L9501 Headlight Bulb Size

The Ford L9501 headlight bulb specifications include high beam sizes H6024, 9007, and H4651, along with low beam sizes H6024, 9007, and H4656 for this model. The replacement chart covers 1997 to 1998 production years 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

Years	Bulb Size
1997-1998	H6024 (With 2 Round Headlamps)
	H4651 (With 4 Rectangular Headlamps)
	9007 (With Composite Headlamps)

Low Beam Headlight

Years	Bulb Size
1997-1998	H6024 (With 2 Round Headlamps)
	H4656 (With 4 Rectangular Headlamps)
	9007 (With Composite Headlamps)

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). 7-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6024
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H4651
ANSI standard (US & Canada). Dual-filament halogen bulb with PX29t base. 12V, 65W/55W.	9007
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H4656

Other Locations

Additional Notes

The Ford L9501 (1997-1998) accommodates three distinct headlamp configurations: two round headlamps, composite headlamps, and four rectangular headlamps. Each configuration requires a different bulb type, and the correct fitment depends entirely on which headlamp system is installed on the vehicle.
The H6024 is a 7-inch round sealed beam unit operating at 12V. It serves as both the high beam and low beam source in the two round headlamp configuration, meaning the entire unit performs both functions and is replaced as a whole rather than as an individual filament or capsule.
The 9007 is a dual-filament halogen bulb with a PX29t base, rated at 12V with 65W for high beam and 55W for low beam. A single 9007 bulb handles both beam functions in the composite headlamp configuration, which distinguishes it from the sealed beam options used in the other two configurations.
The four rectangular headlamp configuration uses two separate sealed beam units: the H4651 for high beam and the H4656 for low beam. Both are 4x6-inch rectangular sealed beam units operating at 12V, and despite their identical physical format, they are not interchangeable between beam positions.
The H4651 and H4656 share the same 4x6-inch rectangular sealed beam format and voltage rating, yet they are designated for different beam functions. Substituting one for the other would result in incorrect beam output for the assigned headlamp position.
All four bulb types listed across these specifications conform to ANSI standards applicable in both the United States and Canada, indicating standardized performance and fitment requirements within those markets.
The H6024, H4651, and H4656 are sealed beam units, meaning the lens, reflector, and filament form a single assembly. Failure of any internal component requires replacement of the entire sealed unit rather than the filament alone.
The 9007 bulb is the only non-sealed-beam type in these specifications. Its PX29t base allows it to be removed and replaced independently of the headlamp housing, unlike the sealed beam units used in the round and rectangular headlamp configurations.