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| Fitting Position: | Exhaust Side |
| Valve head diameter [mm]: | 36 |
| Valve stem diameter [mm]: | 8 |
| Length [mm]: | 106.8 |
| Valve seat angle [°]: | 45 |
| Valve Seat Material: | Chrome-Mangan-Nickel Steel |
| Surface: | Nitrified |
| Packaging height [cm]: | 14 |
| Packaging length [cm]: | 4.2 |
| Packaging width [cm]: | 4.2 |
| Net Weight [g]: | 82 |
| MAZDA: | RF01 12 121 |
| MAZDA: | RF0112121B |
| MAZDA: | RFO1 12 121 |
| MAZDA: | RFO1 12 121B |
| FRECCIA: | R4391/RNT |
| STELLOX: | 01-24070-SX |