The Sparco 600 series seat base is a direct fit mounting bracket that adapts a Sparco or compatible racing seat to the factory floor mounting points of the BMW E46. It is formed from 3/16 inch steel for a strong, flex free platform and bolts to the OEM seat mounts with no floor modification. A wide flat top surface also lets side mounts be fixed directly to the base for the lowest seating position. This is the passenger (right) side base.
| Type | Seat mounting base (bottom mount) |
| Material | 3/16 in steel |
| Side | Passenger (right) |
| Mounting | Bolts to factory seat mounts |
| Part Number | 600SB121R |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000 | BMW | 323Ci | Base |
| 1999-2000 | BMW | 323i | Base |
| 2001-2005 | BMW | 325Ci | Base |
| 2001-2005 | BMW | 325i | Base |
| 2001-2005 | BMW | 325xi | Base |
| 2000 | BMW | 328Ci | Base |
| 1999-2000 | BMW | 328i | Base |
| 2001-2006 | BMW | 330Ci | Base |
| 2001-2005 | BMW | 330i | Base |
| 2001-2005 | BMW | 330xi | Base |
| 2001-2006 | BMW | M3 | Base |
