When doing replacement or upgrading on 1967 – 1973 Fiat 850, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.
| High Beam and Low Beam Headlight | 1967 – 1973 | 6014 |
| Back Up Light | 1973 | 1156 |
| Brake | 1973 | 1157 |
| Front Side Marker | 1973 | 194 |
| Front Turn Signal | 1973 | 1157 |
| License Plate | 1967 – 1972 | 89 |
| 1973 | 97 | |
| Parking Light | 1973 | 1157 |
| Rear Side Marker | 1973 | 194 |
| Rear Turn Signal | 1967 – 1973 | 1156 |
| Tail Light | 1973 | 1157 |