R2S 11559880047 High Pressure Turbocharger for MaxxForce DT466 7.6L
The B1 (11559880047) is the BorgWarner high-pressure turbocharger of the R2S compound twin-turbo system on the 2010-2012 International Navistar MaxxForce DT466 (I334) 7.6L engine. R2S (Regulated Two-Stage) is BorgWarner’s compound system: this small B1 high-pressure turbo sits closest to the exhaust manifold and spools first, paired with the B2FS low-pressure turbo. International OEM 1882868C91. Built new, dynamically balanced, ships with gaskets. We supply shops, fleets, and distributors.
Turbo Model
B1 / R2S (BorgWarner, high-pressure side of two-stage system)
OEM / Interchange Numbers
11559880047, 18828681, 188948692, 189155793, 189139291, 189139292, 189139293, 1882868C91
Application
2010-2012 International Navistar MaxxForce DT466, DT, I334 7.6L (high pressure)
Service & Support
- 1-Year Unlimited-Mileage Warranty
- US Stock, Fast Dispatch
- Bulk Orders Welcome
- White-Label Support
- Fully Certified
Your Source for Quality Diesel Engine Parts
FAQ
The B1 (11559880047 / 1882868C91) fits the 2010-2012 International MaxxForce DT466 / DT / I334 7.6L as the high-pressure turbo of the R2S two-stage system.
High pressure — the smaller inner turbo on the exhaust manifold. The matching low-pressure units are the B2FS 12749880076 and 12749880075.
Brand new, dynamically balanced. No core charge. One-year unlimited-mileage warranty.
Yes. US stock, volume pricing for shops, fleets, and distributors.
R2S High-Pressure Turbo for MaxxForce DT466 EPA10
The 2010-2012 MaxxForce DT466 runs BorgWarner’s R2S regulated two-stage system. The B1 HP turbo (this page) handles low-RPM response; the B2FS LP turbo handles volume at higher RPM. Diagnose which stage failed before ordering — or replace both while the system is apart.
MaxxForce DT466 EPA10 twin-turbo system
| Position | Turbo | Part # |
|---|---|---|
| High Pressure (this page) | B1 | 11559880047 |
| Low Pressure | B2FS | 12749880076 |
| Low Pressure (alt config) | R2S | 12749880075 |
Installation
- The HP turbo is the inner unit on the exhaust manifold.
- Ships with gaskets. Flush oil feed lines for both turbos.
- Prime before startup; idle 3-5 minutes. Verify boost via ECM.
See our quality process for details.
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