Product Description
BORGWARNER 177102 S400 EXHAUST HOUSING — 83MM 0.90 A/R, DIVIDED T4 is a genuine AirWerks turbine housing sized for the 83mm S400 wheel with a quick-spooling 0.90 A/R and a twin-scroll (divided) T4 inlet—a go-to combo for street/strip S400 builds and compound setups aiming for crisp response and solid drive-pressure control.
Fitment & Usage
- Turbo series: S400 / AirWerks SX, SX-E, SX3 (83mm turbine wheel)
- Inlet: Divided T4 (twin-scroll)
- Typical outlet: Standard S400 downpipe interface (verify clamp/flange before ordering)
- Use cases: Street/strip S400 singles, S300/S400 compounds, atmospheric chargers where response matters
- Notes: Confirm 83mm turbine wheel OD, manifold flange style, and downpipe connection.
Cross-Reference / Alternatives (BorgWarner on CPP only)
- BORGWARNER 177103 — 83MM, T4 1.00 A/R
- BORGWARNER 177104 — 83MM, T4 1.10 A/R
- BORGWARNER 177105 — 83MM, T4 1.25 A/R
- BORGWARNER 176811 — 83MM, T6 1.10 A/R
Why Buy from CPP Diesel
- Genuine BorgWarner parts with expert fitment support
- Free shipping and secure packaging
- Diesel specialists for Cummins, Power Stroke & Duramax builds
Specifications for BORG WARNER 177102
| Field | Value |
|---|---|
| Turbo Series | S400 (AirWerks) |
| A/R | 0.90 (divided) |
| Inlet | T4, twin-scroll (divided) |
| Wheel Compatibility | 83mm S400 turbine wheel |
| UPC | 840232706604 |
| GTIN | 0840232706604 |
| Shipping Info | Free Shipping (typical box approx. 11" × 11" × 11") |
| Cross Reference | BW 177103 (T4 1.00), 177104 (T4 1.10), 177105 (T4 1.25), 176811 (T6 1.10) |
| E-Codes | Not specified by manufacturer |
| Material | High-temp cast iron |
| Center Section | Compatible with S400 journal-bearing center sections (verify model) |
| Prop 65 | This product may expose you to chemicals including nickel. Learn more. |
FAQ
Will this fit my S400?
Yes—if you’re running an 83mm S400 turbine wheel with a divided T4 manifold. Always verify wheel OD, inlet flange, and outlet style.
How does the 0.90 A/R perform?
It prioritizes quicker spool and strong midrange versus larger A/Rs (1.00–1.25), at the cost of some ultimate top-end. Great for street/strip builds and compounds.
What outlet/clamp do I need?
Most S400 housings use the standard S400 downpipe interface; confirm your V-band/half-Marmon hardware before ordering.
Is a wastegate required?
Setups vary. Divided T4 housings often benefit from careful gate sizing and placement to manage drive pressure in high-boost builds.
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Product Reviews
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Great product!
Definitely woke the charger up!! No more lag!! Casting was very smooth and clean, it arrived oiled no surface rust at all, no dings or knicks on the mounting surfaces. Great product!
