Bosch 0440020082 Feed Pump – Precision Fuel Supply For High-Pressure Common-Rail Systems

 

The Bosch 0440020082 is not a high-pressure pump; it is a low-pressure supply unit – and this distinction is critical. Within CP1 (Common Rail 1st generation) architectures, this pump generates the baseline fuel pressure (approx. 4–6 bar) required to reliably feed the high-pressure pump. Without consistent inlet pressure, the high-pressure piston assembly risks cavitation, irregular fuel delivery, and eventual mechanical failure. Rather than focusing solely on replacement, this component should be understood as a system stabilizer. Its integrated pressure control valve, fine-mesh inlet strainer, and bearing-supported cam mechanism define a cohesive unit that directly impacts injector performance, rail pressure consistency, and combustion stability. When the CP1 pump malfunctions, the entire fuel chain becomes unreliable – and 0440020082 is the gateway that restores order.

 

This supply pump is engineered primarily for Euro 3 and Euro 4 heavy-duty truck engines and select passenger diesel models that rely on Bosch CP1 fuel systems. Core compatible vehicle segments include:

DAF (XF, CF series with PE/ME engine generations)

Volvo (FH, FM series with D12 engines)

Renault (Premium, Magnum with MIDR engines)

IVECO (Cursor 8/10/13 with CP1 injection)

Scania (some industrial and marine derivatives)

Engine platforms commonly associated with 0440020082: PE/ME (Pump-Engine/Motor-Engine) and MS6.3 system variants. Always confirm the OEM part number against your existing unit – direct physical mounting patterns and inlet/outlet port orientation may vary subtly between manufacturers, even when the Bosch base number remains identical.

 

Parameter	Specification
Bosch Part Number	0440020082
Pump Type	Vane-type feed/supply pump
Nominal Feed Pressure	4.0 – 6.0 bar (at rated engine speed)
Operating Temperature Range	-30°C to +120°C
Inlet Port Thread	M16x1.5
Outlet Port Thread	M14x1.5
Housing Material	High-strength aluminum alloy (corrosion-resistant coating)
Rotational Direction	Clockwise (viewed from drive end)
Mounting Interface	Flange-mounted to gear housing with O-ring seal
Integrated Valve	Internal pressure-limiting valve (non-serviceable)
Filtration Requirement	10 μm primary fuel filter recommended upstream
Fuel Compatibility	Diesel EN590, B7/B10, and select synthetic blends

 

Most service failures attributed to "high-pressure pump seizure" or "injector scoring" trace back to feed pump degradation. The vane mechanism inside 0440020082 is sensitive to fuel contamination and aeration. Proactive replacement of this unit – every 600,000 to 800,000 km in heavy-duty applications – often prevents catastrophic CP1 breakdowns. Unlike competing aftermarket alternatives, Bosch maintains strict clearance tolerances (≤ 0.03 mm between vane tips and housing bore) which ensures volumetric efficiency remains above 90% even under high thermal loads. Furthermore, the integrated bypass construction guarantees that even if the internal spring weakens, the engine does not suffer a complete fuel starvation event – a built-in safety characteristic often overlooked.

 

Q1: How do I distinguish genuine Bosch 0440020082 from counterfeit units?
Check the laser-engraved Bosch logo and data matrix code – genuine units feature a distinct metallic sheen with uniformly spaced digits. Counterfeits often show blurred numbers or inconsistent font depth. Also, genuine units have a silver-colored pressure valve insert; fakes often use a plain brass substitute.

Q2: Can I replace only the internal vane kit instead of the entire pump?
Bosch does not offer a separate vane service kit for 0440020082. A specific Bosch 0440020082 repair kit (R901017033) is available, which includes all seals and the O-ring but not the rotor or vane pack. If the vanes are scored or worn, the entire assembly must be replaced.

Q3: What is the acceptable pressure drop between the feed pump outlet and high-pressure pump inlet?
Under full-load conditions, a drop exceeding 0.4 bar at rated flow suggests line restriction. Check the fuel line bends and banjo bolt restrictions first before condemning the feed pump.

Q4: Why does my engine start perfectly cold but hesitate when hot?
Hot-start hesitation often points to internal leakage within the 0440020082 caused by thermal expansion clearance increase. Perform a leak-back test; if the return flow exceeds 12% of supply flow at operating temperature, replacement is recommended.

Q5: Is this pump compatible with biodiesel blends above B20?
Bosch approves this pump for B7 and B10 blends. Higher concentrations may degrade the internal seal elastomers over time. For B20–B30 applications, upgrade to a pump with FKM seals.

Q6: What is the typical lead time for a genuine Bosch 0440020082 feed pump?
Availability varies by region. Authorized Bosch diesel service centers typically maintain stock; aftermarket suppliers often list 5–7 business days for import orders. Always confirm country-of-origin certification before ordering.

 

To make your purchasing experience smooth and easy, we offer a variety of secure payment options:

We're here to make your order process worry-free - choose the payment method that works best for you!

 

 

Hot Tags: bosch 0440020082 feed pump – precision fuel supply for high-pressure common-rail systems, China bosch 0440020082 feed pump – precision fuel supply for high-pressure common-rail systems manufacturers, suppliers, factory, 0445020530, 1042300FE010, Bosch for Mercedes, Diesel Fuel Injection Pump 0445020050 ME225083, Euro 6 Tier 4 Final, for Iveco Euro Cargo