Mack MR Headlight Bulb Size

Mack MR headlight bulb sizes include H6024, H4651, and H5001 for high beam applications, along with H6024, H4652, and H5006 for low beam configurations, with each bulb size corresponding to specific vehicle production requirements. The replacement chart covers 1981 through 1997 and documents the bulb specifications applicable across the MR model's production span.

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

High Beam Headlight

YearsBulb TypeShop
1981-1997H6024 (With 2 Round Headlamps)Check Price
H4651 (With 4 Rectangular Headlamps)Check Price
H5001 (With 4 Round Headlamps)Check Price

Low Beam Headlight

YearsBulb TypeShop
1996-1997H6024 (With 2 Round Headlamps)Check Price
H4652 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1993-1995H6024 (With 2 Round Headlamps)Check Price
H4656 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1991-1992H6024 (With 2 Round Headlamps)Check Price
H4652 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1990H6024 (With 2 Round Headlamps)Check Price
H4656 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1989H6024 (With 2 Round Headlamps)Check Price
H4652 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1987-1988H6024 (With 2 Round Headlamps)Check Price
H4656 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1986H6024 (With 2 Round Headlamps)Check Price
H4652 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1985H6024 (With 2 Round Headlamps)Check Price
H4656 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price
1981-1984H6024 (With 2 Round Headlamps)Check Price
H4652 (With 4 Rectangular Headlamps)Check Price
H5006 (With 4 Round Headlamps)Check Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). 7-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.H6024Check Price
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.H4651Check Price
ANSI standard (US & Canada). 4-inch square sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.H5001Check Price
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit, variant of H4651. Not a replaceable bulb — the entire unit is replaced. 12V.H4652Check Price
ANSI standard (US & Canada). 5.75-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.H5006Check Price
ANSI standard (US & Canada). 4x6-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.H4656Check Price

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