Chevrolet K5 Blazer Turn Signal Bulb Size
Chevrolet K5 Blazer front and rear turn signal bulbs utilize multiple size options including 2057NA, 1157NA, 1034NA for front applications and 2057, 1157, 198 for rear applications. The replacement chart covers 1975 through 1986 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.
Front Turn Signal
| Years | Bulb Size |
|---|---|
| 1983-1986 | 2057NA |
| 1982 | 1157NA |
| 1981 | 1034NA |
| 1979-1980 | 1157NA |
| 1975-1978 | 198 |
Rear Turn Signal
| Years | Bulb Size |
|---|---|
| 1983-1986 | 2057 |
| 1979-1982 | 1157 |
| 1975-1978 | 198 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Brighter variant of 1157. 12V, 26.9W/8W. | 2057NA |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 21W/5W. | 1157NA |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Variant of 1157. 12V, 21/5W. | 1034NA |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 198 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W. | 2057 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W. | 1157 |