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| Fitting Position: | before catalytic converter |
| Fitting Position: | after catalytic converter |
| Lambda Sensor: | Planar probe |
| Number of pins: | 4 |
| Cable Length [mm]: | 350 |
| Lambda Sensor: | Thread pre-greased |
| Thread Size: | M18x1,5 |
| Switch Pressure [bar]: | 4 |
| Lambda Sensor: | Heated |
| ALFA ROMEO: | 51774422 |
| ALFA ROMEO: | 55219791 |
| FIAT: | 51774422 |
| FIAT: | 55202416 |
| FIAT: | 55219791 |
| FORD: | 1558873 |
| FORD: | 1754236 |
| FORD: | 9S51-9G444-AA |
| FORD: | 9S519G444AA |
| FORD: | BS51-9G444-BA |
| FORD: | BS519G444BA |
| LANCIA: | 55219791 |
| OPEL: | 55202416 |
| ABARTH: | 55219791 |
| BLUE PRINT: | ADA107049 |
| DELPHI: | ES21058-12B1 |
| DELPHI: | ES21061-12B1 |
| DELPHI: | ES21128-12B1 |
| DELPHI: | ES21240-12B1 |
| EPS: | 1.998.097 |
| FACET: | 10.8097 |
| FEBI BILSTEIN: | 178568 |
| HOFFER: | 7481621 |
| MAGNETI MARELLI: | 466016355154 |
| MEAT & DORIA: | 81621 |
| METZGER AUTOTEILE: | 0895447 |
| NTY: | ESL-AR-001 |
| SIDAT: | 90233 |
| SWAG: | 33 10 4607 |
| VEMO: | V24-76-0027 |