The 0445020061 common rail fuel pump (Bosch CP3 series) is a high‑pressure injection component, fully compatible with original Bosch architecture. This pump is specifically designed for heavy‑duty diesel engines used in commercial trucks, buses, construction machinery, agricultural tractors, and industrial generators. Delivering stable rail pressure up to 1,800 bar, the 0445020061 ensures efficient combustion, low emissions, and reliable cold starts under the most demanding conditions.
Rsolid Engine Parts supplies the 0445020061 as a brand‑new, Bosch‑compatible unit – 100% calibration tested, and backed by a full 12‑month warranty at competitive prices for fleets, workshops, and equipment dealers.
1. Structural Advantages of the Bosch 0445020061 Pump
The 0445020061 belongs to the Bosch CP3S3 family (type formula CR/CP3S3/R70‑S), widely recognized as one of the most durable high‑pressure pump platforms in the diesel industry. Its design offers several key benefits for heavy‑duty applications:
Three‑Plunger Radial Piston Design – Unlike two‑plunger CP4 pumps, the CP3 uses three radial plungers arranged around an eccentric cam ring. This delivers exceptionally smooth, high‑volume fuel flow with minimal pressure pulsation, reducing mechanical stress on the common rail, injectors, and high‑pressure lines – critical for high‑mileage and high‑load operation.
Integrated Vane‑Type Transfer Pump – A built‑in low‑pressure vane pump draws fuel directly from the tank and supplies the high‑pressure plungers, ensuring consistent inlet pressure even when the chassis lift pump is weak. This eliminates a common failure point and simplifies installation.
High‑Pressure Capability (1,800 bar) – Generates rail pressures up to 1,800 bar (26,100 psi), enabling superior fuel atomisation for complete combustion, lower particulate emissions, and improved fuel economy – essential for Euro 4, Euro 5, and Tier 4 compliance.
Heavy‑Duty Drive Shaft & Bearings – Designed to withstand the high torsional loads and vibration of 4‑cylinder and 6‑cylinder industrial engines, ensuring long service life in both on‑highway and off‑highway applications.
High‑Pressure Fuel Lubrication – All moving internal parts (plungers, roller shoes, eccentric cam) are lubricated solely by diesel fuel, eliminating external oil lines and simplifying installation.
Integrated Digital Flow Control Valve (ZME) – An inlet metering solenoid valve precisely regulates the amount of fuel entering the high‑pressure section based on ECU demand, providing accurate rail pressure control, improved throttle response, and lower fuel consumption.
Robust Cast Iron Housing – The pump body is manufactured from high‑strength cast iron with an anti‑corrosion coating, engineered to withstand vibration, thermal cycling, road salt, moisture, and dust encountered in heavy‑duty environments.
Direct Bosch CP3S3 Compatibility – Identical mounting flange (3‑bolt SAE A), drive gear interface, high‑pressure outlet ports, and electrical connector as the original Bosch 0445020061. True plug‑and‑play replacement with no modifications.
2. Compatible Engine & Vehicle/Equipment Models (≤5)
The 0445020061 CP3 pump is used in a wide range of 4‑cylinder and 6‑cylinder common rail diesel engines from manufacturers such as MAN, DAF, Cummins, Deutz, Perkins, IVECO, John Deere, and Chinese brands (Weichai, Yuchai, Xichai, Sinotruk) . Typical applications include:
MAN D08 / D20 / D26 engines – Found in MAN TGX, TGS, TGL, TGM trucks and buses (Euro 4/5). Common variants: TGX 18.440, TGS 28.480, TGL 8.180.
DAF MX 11 / MX 13 engines – Used in DAF XF, CF, LF series trucks (certain model years).
Cummins ISB / ISC / ISL 6‑cylinder engines – Found in medium‑duty trucks, buses, and construction equipment.
Deutz TCD 2012 / 2013 / 2014 L4/L6 engines – Used in agricultural tractors (e.g., Fendt, Deutz‑Fahr), wheel loaders, excavators, and industrial gensets.
Perkins 1106 / 1206 series engines – Found in generators, compressors, and agricultural machinery.
Weichai WP10 / WP12 / WP13 engines – Widely used in Chinese trucks, buses, and construction machinery (verify pump number).
✅ Important Fitment Note – Before ordering, always verify the Bosch number on your original pump (stamped on the nameplate). The 0445020061 may also be listed under OEM numbers such as 51.12501‑7120, 51.12501‑7121, or engine‑specific part numbers. Contact us with your engine model and serial number for fitment confirmation.
3. Common Failures & Professional Installation/Replacement Advice
3.1 Typical Symptoms of a Failing 0445020061 Pump
Loss of power under heavy load – The engine struggles to maintain speed or torque, often accompanied by black exhaust smoke.
Extended cranking time before start – Rail pressure builds slowly, especially after the equipment sits overnight.
Engine surging or rough idle – Inconsistent fuel delivery at low RPM, causing hunting or misfiring.
DTC codes P0087, P0088, or P0191 – Rail pressure too low, too high, or sensor rationality fault. Use diagnostic software (MAN Cat, Bosch KTS, etc.) to confirm.
Metal particles in the fuel filter – A clear sign of CP3 internal wear (plunger scuffing or roller bearing failure). Even small ferrous particles indicate imminent pump failure.
External fuel leakage – Visible diesel around the pump body, particularly at the drive shaft seal or around the ZME metering valve.
Diesel contamination in engine oil – A failed drive shaft seal allows fuel to enter the crankcase, leading to rising oil level and risk of engine damage.
3.2 Professional Installation & Replacement Recommendations
Perform a complete fuel system diagnosis – Use a compatible diagnostic tool to read fault codes, monitor rail pressure, and measure injector return flow rates. Identify any injectors with excessive return flow.
Replace the fuel metering valve (ZME) – If the old pump has failed internally, replace the ZME solenoid valve (Bosch part number typically 0928400640 or equivalent) with a new one. A faulty ZME can cause repeat pump failure.
Replace all fuel filters – Install new primary (water separator) and secondary fuel filters before running the new pump. CP3 pumps are sensitive to contamination.
Flush the entire fuel system – Drain and clean the fuel tank. Blow out all supply and return lines with compressed air. Replace any rubber hoses that show degradation. This step is non‑negotiable – debris from a failed pump will destroy a new CP3 within minutes.
Inspect and flow‑test all injectors – High return flow from worn injectors will prevent correct rail pressure and cause repeat pump failure. Have all injectors professionally cleaned or replaced as necessary.
Replace the engine oil and filter – If diesel has contaminated the oil (rising level or diesel smell), change the oil and filter BEFORE running the new pump.
Prime the low‑pressure circuit – Use a hand vacuum pump on the fuel return line to pull bubble‑free fuel through the pump and filters. CP3 pumps are self‑priming but dry cranking will score the plungers.
Fill the pump with clean diesel – Remove the high‑pressure outlet fitting and pour clean, lubricious diesel (or Bosch assembly lubricant) into the pump housing to prevent dry start scoring.
Torque all connections to specification – High‑pressure outlet (M14×1.5 cone seal): 40–45 Nm. Low‑pressure inlet (M16×1.5): 25 Nm. High‑pressure line union nuts: 35–40 Nm. Drive shaft nut: consult the engine workshop manual (typically 100–130 Nm). Use a calibrated torque wrench.
Reset fuel adaptations – After installation, use diagnostic software to clear learned fuel trim values and perform a “high‑pressure pump adaptation” or “fuel system learn” routine.
Perform a leak test – Idle the engine for 10 minutes, then inspect all high‑pressure and low‑pressure unions, the pump mounting area, and the drive shaft seal for any signs of fuel wetness.
Monitor rail pressure – Using live data, verify that actual rail pressure tracks within ±20 bar of specified value across all RPM ranges. Perform a road or load test.
💡 Pro Tip – CP3 pumps are generally robust, but water contamination is their enemy. Always drain the water separator daily. For engines operating in dusty or humid climates, consider installing an additional 5‑micron fuel filter and using a high‑quality fuel additive with lubricity enhancer.
4. Why Choose Rsolid Engine Parts as Your Supplier
✅ Exact Bosch CP3 Compatibility – Direct replacement for 0445020061 in a wide range of diesel engines and equipment. No modifications required.
✅ 100% Calibration Tested – Each pump is run on a Bosch EPS 200 test bench to verify delivery volume, rail pressure stability (1,800 bar), ZME regulator response, and leak‑free operation. Test reports available.
✅ 12‑Month Warranty – Full coverage against manufacturing defects for all pumps supplied, even for heavy‑duty, high‑hour applications.
✅ Competitive Fleet & Workshop Pricing – Volume discounts for transport companies, agricultural dealers, construction equipment repair shops, and parts distributors.
✅ Fast Worldwide Shipping – Stock ready to ship to Europe, Asia, Africa, the Middle East, and the Americas.
✅ Expert Technical Support – Our diesel injection specialists provide pre‑purchase fitment verification, diagnostic assistance, and detailed installation guidance via WhatsApp or email.
Contact Rsolid Engine Parts Today
📞 WhatsApp: +8615975376778
📧 Email: amy@rinjector.com
