The BorgWarner AirWerks S400 turbine housing is built with a divided T4 twin-scroll inlet in a 1.10 A/R for an 83/74mm turbine wheel. The twin-scroll design separates exhaust pulses for crisp response. Cast iron construction stands up to high exhaust-gas temperatures, and the housing bolts to the S400 center section to complete the turbine side of the turbocharger.
| Series | S400 |
| Turbine Wheel | 83/74mm |
| Turbine Inlet | Divided T4 (twin-scroll) |
| A/R | 1.10 |
| Design | Twin-scroll |
| Material | Cast iron |
| Part Number | 177104 |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
