What is 294000-0570 Diesel Injection Pump?
The 294000-0570 Diesel Injection Pump is a high-pressure common rail fuel pump manufactured by Denso, designed for use in various Toyota diesel engines, including the 1KD-FTV (3.0L D-4D) and 2KD-FTV (2.5L D-4D). This pump is a critical component of the common rail fuel system, responsible for drawing fuel from the tank, pressurizing it to extreme levels, and delivering it to the common rail for distribution to the injectors. The 294000-0570 is a Denso HP3-series radial piston pump, engineered to meet the performance and emissions requirements of Toyota’s Euro 4 and Euro 5 diesel engines. It ensures precise fuel metering, stable rail pressure, and reliable operation across a wide range of driving conditions.
How Does 294000-0570 Diesel Injection Pump Work?
The 294000-0570 Diesel Injection Pump operates as a radial piston high-pressure pump with an integrated low-pressure transfer section. Driven by the engine’s timing chain or gear train, the pump’s internal cam ring actuates three radial pistons arranged at 120-degree intervals. Fuel is first drawn from the tank through the low-pressure inlet by an integrated gear-type transfer pump. It then passes through a suction control valve (SCV), which is electronically controlled by the engine control unit (ECU). The ECU modulates the SCV to precisely regulate the volume of fuel entering the high-pressure pumping chamber. As the radial pistons reciprocate, they compress the fuel to pressures typically up to 1,600–1,800 bar. This high-pressure fuel is discharged into the common rail, where it accumulates and is held ready for the injectors. A pressure relief valve protects the system from over-pressure, ensuring stable rail pressure across all engine speeds and loads.
Advantages of 294000-0570 Diesel Injection Pump
Choosing the 294000-0570 Diesel Injection Pump for your Toyota D-4D engine offers several key benefits:
Precise Fuel Control: The electronically controlled SCV enables the ECU to deliver the exact fuel volume required for any driving condition, resulting in smoother acceleration, improved fuel economy, and reduced emissions.
High-Pressure Performance: Capable of generating pressures up to 1,800 bar, this pump ensures superior fuel atomization, leading to cleaner combustion, reduced soot formation, and lower particulate emissions.
Denso HP3 Reliability: Built on Denso’s proven HP3 platform, the pump incorporates advanced materials, precision machining, and rigorous testing for long-term reliability.
Durability: Constructed with hardened internal components and fuel-lubricated bearings, the 294000-0570 pump withstands demanding driving conditions, including heavy loads and high ambient temperatures.
Direct Fit Compatibility: Engineered specifically for Toyota 1KD-FTV and 2KD-FTV engines, this pump matches OEM specifications for straightforward installation.
Application of 294000-0570 Diesel Injection Pump
The 294000-0570 Diesel Injection Pump is specifically designed for Toyota vehicles equipped with the 1KD-FTV (3.0L) and 2KD-FTV (2.5L) D-4D engines, particularly those meeting Euro 4 and early Euro 5 standards. Common applications include:
Toyota Hilux (AN10/AN20/AN30): Widely used in Hilux models from approximately 2005 to 2011.
Toyota Fortuner (AN50/AN60): Applied in the Fortuner SUV with the same engine family.
Toyota Hiace / RegiusAce (H200): Used in Hiace vans and minibuses equipped with the 1KD-FTV or 2KD-FTV engines.
Toyota Land Cruiser Prado (120 series): Compatible with certain 1KD-FTV variants.
Toyota Hilux / Fortuner Export Markets: Found in vehicles destined for Asia, Australia, Africa, and the Middle East.
Specifications (Types) of 294000-0570 Diesel Injection Pump
The 294000-0570 Diesel Injection Pump belongs to the Denso HP3 family of common rail pumps. Key specifications include:
Pump Type: High-pressure common rail radial piston pump (Denso HP3 architecture) with integrated gear-type transfer pump.
Number of Pistons: 3 radial pistons arranged at 120 degrees.
Maximum Operating Pressure: 1,600–1,800 bar (23,200–26,100 psi), depending on engine calibration.
Drive Configuration: Flange-mounted, driven by timing chain or gear train.
Fuel Metering: Electronically controlled suction control valve (SCV).
Low-Pressure Section: Integrated gear-type transfer pump.
Inlet Port: Low-pressure inlet (12mm typical) compatible with Toyota fuel filter assemblies.
Outlet Port: High-pressure outlet (M12 or M14 thread) for connection to the common rail.
Compatibility: OEM replacement for Toyota 1KD-FTV (3.0L) and 2KD-FTV (2.5L) Euro 4/Euro 5 engines.
Lubrication: Fuel-lubricated; requires clean diesel fuel (EN590 or equivalent).
Common Failures: SCV wear, fuel contamination, internal wear; symptoms include hard starting, loss of power, DTC codes (P0087, P0093), and erratic rail pressure.
Supplier of 294000-0570 Diesel Injection Pump
Sourcing the 294000-0570 Diesel Injection Pump from a trusted supplier is essential for proper fitment and reliable performance. Rsolid engine parts has established itself as a premier provider of high-quality fuel injection components, specializing in Denso HP3 systems for Toyota, Hino, Isuzu, and other leading diesel platforms.
Rsolid engine parts distinguishes itself through rigorous quality control. Every 294000-0570 pump undergoes comprehensive testing, including high-pressure calibration, flow testing, and SCV response verification to ensure seamless integration with the Toyota ECU and injectors. For exchange units, the company performs complete disassembly, ultrasonic cleaning, inspection, and replacement of all wear components with new OEM-grade parts.
