Shandong Shengyue Technology Development Co.,Ltd is one of the most professional bosch fuel metering unit metering valve scv (suction control valve) 0928400627 manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
BOSCH Fuel Metering Unit Metering Valve SCV (Suction Control Valve) 0928400627
0928400627 is commonly used in heavy-duty commercial vehicle specifically the MAN TGA, TGX, and TGS series-as well as in certain construction vehicles equipped with Cummins ISLe/ISDe engines.
0928400689 is commonly used in medium-to-light trucks and medium-sized buses. It is widely supplied for Yuchai 4D, 4E, and 6J series engines, as well as for vehicles and machinery from Foton, FAW Jiefang, and those equipped with Perkins engines.
0928400728 is commonly used in light-duty diesel vehicles and passenger cars, such as the Fiat Ducato 2.3D, Iveco Daily 2.3D, and UAZ models (light vans or small trucks).
0928400818 is primarily used in light truck series and is widely compatible with medium- and light-duty diesel engines from manufacturers such as JMC, Isuzu, JAC, FAW Jiefang, and Yunnei Power.
0928400633 fits Renault M9R series 2.0 dCi diesel engines and Hyundai/Kia diesel vehicles equipped with CP3 pumps.
Critical Distinction:
Normally Open vs. Normally Closed this is a major, often overlooked pitfall during procurement and replacement. Even if the valve body dimensions and mounting bolt patterns are identical, the operating logic is completely opposite.
Normally Open (NO): The valve is fully open when unpowered, allowing maximum oil intake. If the metering unit is unplugged, the high-pressure pump will blindly pump oil at full capacity, causing the common rail pressure to spike instantly; this triggers the pressure relief valve to blow open (resulting in a "rail pressure too high" fault code and engine speed limitation).
Normally Closed (NC): The valve is closed when unpowered, preventing oil from entering the high-pressure chamber. If power is lost or the coil burns out, the engine will immediately stall and refuse to restart (resulting in a "rail pressure too low" fault code and a lack of starting rail pressure).
Safety Warning: If a Normally Closed valve is mistakenly installed on a pump designed for a Normally Open valve, the vehicle will be unable to build rail pressure, potentially leading to mechanical damage to the high-pressure pump.
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