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.
Specifications
| 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 |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
