Product Description
BorgWarner 177208 S300SX3 Exhaust Housing — .91 A/R, 74mm, T4 Divided
This genuine BorgWarner AirWerks S300SX3 turbine housing delivers a proven balance of spool and top-end flow for 80/74mm S300 wheels in single or compound setups. The .91 A/R divided T4 inlet improves drive-pressure balance and mid-range punch while maintaining strong top-end performance. Built from durable cast iron for heat-cycle reliability.
Fitment & Notes
- Platform: BorgWarner AirWerks S300/S300SX3 (80/74mm turbine wheel compatibility)
- A/R: 0.91 (twin-scroll/divided)
- Inlet: T4 divided; Outlet: 4.21" V-band-style
- Use case: High-flow single S300 or high-pressure charger in S300/S400 compounds
- Includes: Turbine housing only (confirm wheel size, outlet, and flange before ordering)
Cross-Reference / Related BorgWarner Items (CPP Only)
- BORGWARNER 177209 — 1.00 A/R, 68mm, T4
- BORGWARNER 177210 — 0.88 A/R, 68mm, T4
- BORGWARNER 177211 — 0.88 A/R, T4
- BORGWARNER 177275 — S366/74, .91 A/R, T4
- BORGWARNER 177281 — S366/74, .88 A/R, T4
- BORGWARNER 177284 — S366/74, .91 A/R, T4
Why Buy from CPP Diesel
- Genuine BorgWarner components & expert S300 sizing help
- Fast, free shipping and knowledgeable diesel support
- Inventory that supports single and compound S300/S400 builds
FAQs
Will this housing fit my S300SX-E?
Yes—verify you have the 80/74mm S300 turbine wheel and T4 divided inlet to ensure direct fit.
What’s the benefit of .91 A/R vs .88 or 1.00?
.91 A/R often balances spool and top-end on 5.9/6.7 Cummins singles and high-pressure compound roles; .88 favors quicker response, 1.00 favors more top-end flow.
Is hardware or an outlet clamp included?
No. This is the turbine housing only. Reuse or source clamps/studs as required.
Is this CARB legal?
No CARB Executive Order (E-code) is provided for this universal housing; intended for off-road/competition use where applicable.
Specifications for BORG WARNER 177208
| Attribute | Value |
|---|---|
| Turbo Series | AirWerks S300 / S300SX3 |
| A/R & Inlet | .91 A/R, T4 divided (twin-scroll) |
| Turbine Wheel Compatibility | 80/74mm S300 wheel |
| Outlet | Approx. 4.21" V-band-style |
| GTIN (UPC-A) | 840232708677 |
| Shipping Info | Free Shipping; boxed approx. 11" × 11" × 11" |
| Cross Reference (CPP Links) | 177209 (link), 177210 (link), 177211 (link), 177275 (link), 177281 (link), 177284 (link) |
| E-Codes / CARB | No CARB E.O. (universal/competition part) |
| Prop 65 | Warning: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
