Injection Pressure Regulator (IPR) Valve
The IPR (Injection Pressure Regulator) valve in the International Navistar MaxxForce DT engines, specifically the OEM 1889325C95 used in models from 2011 to 2015, plays a critical role in regulating fuel injection pressure. This valve modulates the high-pressure oil system, ensuring precise control over the injection pressure delivered to the fuel injectors.
Key Functions of the IPR Valve:
- Pressure Regulation
- It adjusts the high-pressure oil system to maintain optimal fuel injection pressure, essential for efficient engine operation.
- Engine Performance
- Proper regulation directly impacts engine performance, ensuring smooth running, consistent power, and fuel efficiency.
- Diagnostic Aid
- Issues with the IPR valve can trigger engine performance problems, making it a crucial component in diagnostics.
for Models
YEAR |
MAKE |
ENGINE(S) |
2011 |
International Navistar |
MaxxForce DT |
9 |
10 |
N9 |
N10 |
2012 |
International Navistar |
MaxxForce DT |
9 |
10 |
N9 |
N10 |
2013 |
International Navistar |
MaxxForce DT |
9 |
10 |
N9 |
N10 |
2014 |
International Navistar |
MaxxForce DT |
9 |
10 |
N9 |
N10 |
2015 |
International Navistar |
MaxxForce DT |
9 |
10 |
N9 |
N10 |
OEM NUMBERS
Primary OEM |
1889325C95 |
Additional OEM |
1889325C95, 3036669C91, 7092991C1 |





