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The Sinotruk OEM Pressure Piston (Part No: 080V05410-0056) is a precision-engineered component for fuel injection pumps in HOWO ZZ3257/ZZ1257 models. Manufactured from chromium-molybdenum alloy, it ensures stable fuel pressure delivery under high-temperature conditions.
▸ Technical Specifications:
Parameter
Value
Material
20CrMo alloy steel
Diameter
28.575mm ±0.01mm
Surface Treatment
Nitriding (0.1-0.3mm layer)
Operating Pressure
180-220 MPa
Compatibility
Bosch VP37/VE pumps
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Clean pump housing with non-residue solvent before assembly
Lubricate piston with clean diesel fuel during installation
Torque retaining bolts to 25 Nm in star-pattern sequence
Perform pressure calibration after replacement
