Brey Krause R-9247 Passenger Seat Bottom Mount Adapter - BMW E46/E85/E86 Category_Bridges This additional oil feed helps

This additional oil feed helps prevent oil starvation that is common in 994 / 968 race-built engines

Brey Krause harness guide bars properly locate a racing shoulder harness relative to the driver

Available in your choice of 4 thicknesses (15-30mm)

If the helmet is in contact with the neck support at the moment of impact the overall load passing through the neck can be reduced

Brey Krause R-9247 Passenger Seat Bottom Mount Adapter - BMW E46/E85/E86 Category_Bridges This additional oil feed helpsThe Brey Krause R 9247 Seat Mount is an innovative solution that attaches bottom mounting Sparco, Cobra or Recaro seats to the OE factory, power slider mechanisms on BMW E46 (including M Series), and E85 E86 (Z4 Roadster Coupe) cars. The mount maintains the factory power adjustment for both the seat height and front back settings (requires BMW E30 window switches not included, but easily sourced).