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Injection Pressure Regulator (IPR) is a core pressure control valve in the HEUI diesel injection system. Controlled by PWM signals from the ECU, it regulates the movement of the valve spool and adjusts the high-pressure engine oil return flow to achieve precise control of Injection Control Pressure (ICP). Stable ICP pressure ensures reliable hydraulic actuation of the fuel injectors, improves injection pressure control accuracy, and enhances engine power performance, fuel economy, and emissions performance.

Precise Pressure Control —— Precisely regulates ICP pressure to ensure stable injector operation.

Fast Response Control —— Quickly responds to ECU commands for dynamic pressure adjustment.

Stable Injection Output —— Maintains stable pressure and improves engine operating smoothness.

High Pressure Resistance & Long Service Life —— Designed to withstand high-temperature and high-pressure environments for reliable long-term operation.

Stable & Reliable Quality —— Precision manufacturing and strict testing ensure consistent product performance.

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Applicable Models

International / Navistar

International / Navistar DT466 Engine (Production Years: 2004–2006)

International / Navistar MaxxForce DT Engine (Production Years: 2004–2006)

International / Navistar MaxxForce 9 Engine (Production Years: 2004–2006)

International / Navistar MaxxForce 10 Engine (Production Years: 2004–2006)

Applicable Engines:

DT466; MaxxForce DT; MaxxForce 9; MaxxForce 10

Production Years:

2004–2006