OE Part No: 1686649C91 (Navistar original part number), 542027310 (LUK part number)
• Applicable to: International trucks, equipped with DT466 engine, also compatible with some models of Freightliner
• Drive type: Front-end gear transmission (gear head integrated, no pulley)
• Rated pressure: 165 bar (2375 PSI)
• Displacement: 21 ml/r; Control flow rate: 16 L/min
• Steering rotation direction: Clockwise CW (from the rear end view)
• Usage per vehicle: 1 piece per vehicle
Function
1. As the power source of the hydraulic power steering system, the pressurized steering hydraulic oil provides hydraulic thrust to the steering gear;
2. Significantly reduces the torque required to turn the steering wheel, making it easier to make heavy-load, low-speed turns and steer in place;
3. Stabilizes the output oil pressure, maintains a uniform steering feel, and enhances the safety of steering control for heavy-duty trucks;
4. Equipped with a flow and pressure control valve, it automatically stabilizes the pressure and limits the flow rate to protect the steering gear from overpressure damage.
Product features
1. The gear-driven integrated structure is directly driven by the engine gear system, different from the belt model. It is suitable for harsh working conditions of heavy trucks.
2. An internal pressure relief valve is installed. When the pressure overload occurs, it automatically releases the pressure to protect the steering mechanism and oil pipes from bursting.
3. The precise blade assembly ensures stable pressure output. It provides sufficient force at low speeds and does not shake at high speeds.
4. OEM size. The flange installation holes and oil ports have completely matched threads with the original factory, allowing for direct replacement without the need for modification.
5. Heavy-duty durability design, resistant to vibration and high temperatures. Suitable for long-distance freight transportation and heavy-duty work conditions at construction sites.
6. Dual OE numbers are common. 1686649C91 and 542027310 are the same pump.
Q: What is the function of this power steering pump?
A: This hydraulic power steering pump supplies pressurized fluid to the steering gear. It reduces steering torque for the driver, makes steering easier especially under heavy load and low speed. The built-in pressure valve stabilizes oil pressure, protects steering gear and pipelines from overpressure damage, ensures stable and safe steering control for heavy-duty trucks.
Q: What are the features of this pump?
A: 1. Gear-driven design, directly driven by engine gear train, no pulley belt.
2. Integrated pressure relief valve, automatically releases pressure overload.
3. OEM standard dimension, direct replacement without modification.
4. Stable pressure output, consistent steering feel at different engine speeds.
5. Heavy-duty construction, good vibration resistance and high temperature resistance.
6. Dual OE numbers: 1686649C91 and 542027310 refer to the same pump.
Q: What materials are used?
A: Pump housing: die-cast aluminum alloy for light weight and heat dissipation. Internal rotor & vanes: hardened alloy steel for wear resistance. Drive gear: quenched alloy steel. Seals: NBR rubber, resistant to power steering fluid and high temperature.
Q:What is your packing & delivery term?
A: Neutral export packing or customized logo package available. We support bulk wholesale, mixed container shipment, ready stock for fast delivery.
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