Mack WL Turn Signal Bulb Size
The Mack WL front and rear turn signal bulbs both utilize a 1157 size. The replacement chart covers 1982 to 1983 vehicle production specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Turn Signal
Rear Turn Signal
Bulb Specifications
| Description |
Type |
Shop |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W. | 1157 | Check Price |
| ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W. | P21/5W | Check Price |