Mack R Headlight Bulb Size
Mack R headlight bulbs utilize 3 distinct high beam sizes (H6024, H4651, H5001) and 3 distinct low beam sizes (H6024, H4656, H5006) across multiple configurations. The replacement chart covers 1981 through 1991 vehicle production years 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
| Years | Bulb Type | Shop |
|---|---|---|
| 1981-1991 | 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 |
|---|---|---|
| 1991 | H6024 (With 2 Round Headlamps) | Check Price |
| H4656 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1983-1990 | H6024 (With 2 Round Headlamps) | Check Price |
| H4652 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1982 | H6024 (With 2 Round Headlamps) | Check Price |
| H4656 (With 4 Rectangular Headlamps) | Check Price | |
| H5006 (With 4 Round Headlamps) | Check Price | |
| 1981 | H6024 (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. | 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. Not a replaceable bulb — the entire unit is replaced. 12V. | H4656 | 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, variant of H4651. Not a replaceable bulb — the entire unit is replaced. 12V. | H4652 | Check Price |