Mack RB Headlight Bulb Size
The Mack RB headlight bulb size chart specifies high beam bulbs in H6024, H4651, and H5001 sizes, along with low beam bulbs in H6024, H4652, and H5006 sizes. The replacement chart covers vehicle production years from 1989 to 1997.
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 Type | Shop |
|---|---|---|
| 1989-1997 | H6024 (With 2 Round Headlamps) | Check Price |
| H4651 (With 4 Rectangular Headlamps) | Check Price | |
| H5001 (With 4 Round Headlamps) | Check Price |
Low Beam Headlight
| Years | Bulb Type | Shop |
|---|---|---|
| 1997 | H6024 (With 2 Round Headlamps) | Check Price |
| H4652 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1996 | H6024 (With 2 Round Headlamps) | Check Price |
| H4656 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1994-1995 | H6024 (With 2 Round Headlamps) | Check Price |
| H4652 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1993 | H6024 (With 2 Round Headlamps) | Check Price |
| H4656 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1991-1992 | H6024 (With 2 Round Headlamps) | Check Price |
| H4652 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1989-1990 | H6024 (With 2 Round Headlamps) | Check Price |
| H4656 (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. | H6024 | 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). 4-inch square sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V. | H5001 | 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). 5.75-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V. | H5006 | 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 |