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This BorgWarner turbine housing is selected by exact manufacturer part number 178790 and complete turbo-system specifications. Confirm every wheel, housing, flange, A/R, connection, orientation, and wastegate requirement before ordering.
Key Features
- 1.25 A/R Ratio: Balances quick spool-up with high-RPM exhaust flow for strong mid-range torque and top-end power.
- 87mm Turbine Compatibility: Optimized for S400SX3-87 wheels handling 850-1100 HP in diesel performance setups.
- T4 Divided Inlet: Matches OEM-style manifolds on Cummins engines for efficient pulse energy recovery and reduced lag.
- V-Band Turbine Outlet: Enables fast clamp connection for leak-free seals and simple turbo removal during maintenance.
- Ni-Resist Iron Casting: Resists extreme heat up to 1700°F with thick walls for long-term durability under boost.
- Supplies OEM turbos to Dodge Ram Ford GM truck lines.
Fitment
| Fitment Basis | Universal by exact BorgWarner dimensions and turbo-system interface |
|---|---|
| Required Check | Confirm turbo family, wheel sizes, housing A/R, flanges, inlet and outlet geometry, bearing housing, wastegate configuration, oil and coolant connections, rotation, and clearance |
Specifications
| Manufacturer | BorgWarner |
|---|---|
| Manufacturer Part Number | 178790 |
| Product Type | Turbine Housings |
| Turbo Family | S400SX |
| Flange | T4 |
| A/R | 1.25 A/R |
| Wheel Size | 87mm |
| Fitment Type | Universal by exact dimensions and turbo-system interface |
What's Included
One new BorgWarner product in the exact configuration identified by manufacturer part number 178790. Gaskets, lines, clamps, housings, actuators, sensors, hardware, and companion components are included only when expressly stated for this part number.
About BorgWarner
BorgWarner develops original-equipment and performance turbocharging systems, including EFR, AirWerks, S-Series, K-Series, SuperCore assemblies, housings, cartridges, actuators, and service components.
Related BorgWarner Products
- BorgWarner Turbine Housing S400SX SX 1.00 A/R-T4 VTF (87mm)
- BorgWarner Turbine Housing S400SX SX 1.10 A/R-T4 VTF (87mm)
- BorgWarner Turbine Housing S400SX SX .90 A/R-T4 VTF (87mm)
Browse the BorgWarner collection for related turbochargers, housings, assemblies, actuators, and service components.
Frequently Asked Questions
How do I confirm this BorgWarner part matches my turbo system?
Match the exact BorgWarner part number, turbo family, compressor and turbine wheel sizes, housing A/R, flange, inlet and outlet geometry, bearing housing, wastegate configuration, and every connection before ordering.
Is this BorgWarner turbine housing a direct replacement?
Only when the exact part number, dimensions, housings, flanges, rotation, wastegate configuration, oil and coolant connections, and vehicle or system application all match. Similar turbo families are not automatically interchangeable.
What supporting parts should be inspected during installation?
Inspect or replace the oil feed and drain, coolant lines, gaskets, fasteners, intake and charge piping, intercooler, exhaust connections, wastegate hardware, and filtration components. Correct the cause of the previous turbo failure before startup.
Installation Instructions
Follow BorgWarner's current instructions and the vehicle or system service information for this exact part number. Verify every interface before disassembly, correct the cause of any prior turbo failure, prime the oil system, keep debris out of all passages, use new required seals and fasteners, confirm free rotation and line routing, and check for leaks before load. Professional turbo-system installation and calibration are recommended.
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