BorgWarner S400SX Turbine Housing - T4 1.00 A/R 87mm VTF

BorgWarner AirWerks S400SX Turbine Housing - T4 Twin Flow 1.00 A/R, 87mm Turbine Wheel

BorgWarner SKU: BWA178788
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This is a BorgWarner AirWerks S400SX turbine housing with a 1.00 A/R, twin flow volute and a T4 inlet, sized for the 87mm turbine wheel. It fits the AirWerks S400SX and S400SX-E turbos and super cores with the 87mm turbine wheel. Swapping turbine housing A/R is how an AirWerks turbo is tuned between faster spool (smaller A/R) and more top-end flow with lower back pressure (larger A/R).

Specifications

Type Turbine housing
Series AirWerks S400SX
A/R 1.00
Inlet Flange T4
Volute Twin Flow
Turbine Wheel 87mm
Fits AirWerks S400SX and S400SX-E turbos and super cores with the 87mm turbine wheel
Quantity 1
Part Number 178788

Documents: S400SX-E Spec Sheet (PDF)

Which turbos does this housing fit?

  • AirWerks S400SX and S400SX-E turbos and super cores with the 87mm turbine wheel.

What is the inlet flange?

  • T4 inlet.

Which A/R should I choose?

  • A smaller A/R spools sooner; a larger A/R flows more at high rpm with less back pressure.

Shipping

  • Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • 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 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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