1. Product Information
Denso pump parts are the individual components that make up a Denso fuel pump, especially in common rail diesel systems. Below is a clear breakdown of the main Denso pump parts and what each one does.
Main Denso Common Rail Pump Parts
1. Pump Housing/ Body: The main structure of the pump contains internal fuel passages and supports all components
2. Cam Ring/ Camshaft: Driven by the engine, converts rotary motion into reciprocating motion for the plungers
3. Plunger & Barrel (Pump Element): Core high-pressure generating part compresses fuel to very high pressure (up to 1800–2500 bar, depending onthe pump)
4. Suction Control Valve (SCV): An electronically controlled valve regulates how much fuel enters the pump. It controls rail pressure and fuel quantity
5. Delivery Valve: A one-way valve allows high-pressure fuel to flow to the rail. Prevents backflow into the pump
6. Fuel Inlet/ Outlet Fittings: Connect fuel lines to the pump Inlet: low-pressure fuel Outlet: high-pressure fuel to rail
7. Transfer Pump (Feed Pump): Supplies low-pressure fuel inside the high-pressure pump. Usually, gear or vane type
8. Pressure Relief Valve/ Overflow Valve: Protects the system from over-pressure. Returns excess fuel to the tank or low-pressure side
9. Seals, O-Rings, Gaskets: Prevent fuel leaks. Critical during pump overhaul or repair
10. Pump Shaft & Bearings: Transmits engine drive to the pump. Ensures smooth rotation and durability
Common Denso Pump Models & Typical Parts
HP3 pump→ SCV, plunger, cam ring, delivery valve
HP4 pump→ high-pressure plungers, SCV, feed pump
HP5 pump→ multi-plunger system, SCV, pressure valve
Common Failure Parts
SCV (hard starting, pressure fluctuation)
Plunger & barrel (low rail pressure)
Cam ring (metal debris)
Seals (fuel leakage)
2. Product Model List
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| For Denso HP0 camshaft Denso HP0 pump | For Denso rotary speed sensor Denso HP0 pump 094000-0820 |
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| For Denso pump plunger aasy Denso HP0 pump 094150-0190 | For Denso HP0 plunger assy Denso HP0 pump 094040-0150 |
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| For Denso oil transfer pump gear Denso HP0 oil transfer pump | For Denso HP0 pump overhaul kit Denso HP0 pump |
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| For Denso HP0 oil transfer pump assy Denso HP0 pump 094200-0380 | For Denso PCV valve Denso HP0 pump 094040-0150 |
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| For Denso piunger flow hole Denso HP0 pump 095331-0020 | For Denso plunger flow hole Denso HP0 pump 095331-0040 |
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| For Denso HP0 plunger assy Denso HP0 pump 095300-0050 | For Denso pump overflow valve Denso HP0 pump 0930310-0500 |
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| For Denso manual oil pump Denso HP0 pump | For Denso HP0 plunger Denso HP3 pump 294090-0080/90 |
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| For Denso HP3 pump overhaul kit Denso HP3 pum | For Denso HP4 plunger Denso HP4 pump 294050-0042 |
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| For Denso HP3/HP4 outlet valve kit Denso HP3/HP4 pump | For Denso eccentric shaft kit Denso HP3/HP4 pump |
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| For Denso HP3/HP4 pump oil transfer pump Denso HP3/HP4 pump | For Denso eccentric shaft front-end plate Denso HP3/HP4 pump |
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| For Denso oil temperature sensor Denso HP3/HP4 pump | Denso HP5 SCV suction conteol valve kit |
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| For Denso HP3/HP4 pump pressure limiting valve Denso HP3/HP4 pump | For Denso HP3/HP4 pump oil transfer pump Denso HP3/HP4 pump |
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| Denso SCV suction control valve kit 294200-0360 | Denso SCV suction control valve kit 294200-0370 |
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| Denso SCV suction control valve kit 294200-0650 | Denso SCV suction control valve kit 294200-2760 |
