Common Rail Fuel Pump 0445020088 – Bosch CP3S3 Compatible for MMZ D-245 Diesel Engine | Rsolid Engine Parts
The 0445020088 common rail fuel pump is a high-pressure injection pump, fully compatible with the Bosch CP3S3 series architecture. It is specifically designed for 4.75 to 4.8-liter, inline 4-cylinder diesel engines, most notably the MMZ D-245 Euro 3 / Euro 4 engine family, which powers a wide range of heavy-duty commercial vehicles, buses, and agricultural machinery.
As a Bosch CP3 design, this pump is known for its exceptional durability and stable high-pressure delivery compared to later CP4 pumps. It is a direct, plug-and-play replacement for original equipment and is produced as an Original Equipment Manufacturer (OEM) part for the Foton Lovol GAZ 4.8 engine.
Rsolid Engine Parts supplies the 0445020088 CP3S3 pump as a brand-new, Bosch-compatible unit — 100% calibration tested, and backed by a full 12-month warranty at competitive pricing.
1. Structural Advantages of the Bosch CP3S3 0445020088 Pump
The 0445020088 pump belongs to the Bosch CP3S3 series (Bosch type formula CR/CP3S3/L110/30-789S). The CP3 architecture is widely regarded as one of the most robust and durable high-pressure pump platforms in the diesel industry. This pump offers the following engineering advantages:
Three-Plunger Radial Piston Design – 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 and injectors. This design is inherently more reliable than two-plunger CP4 units.
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 feed pressure and simplifying installation by eliminating the need for an external lift pump.
Cast Iron Housing with Anti-Corrosion Coating – The pump body is manufactured from high-strength materials with a protective coating, specifically engineered to withstand the vibration, thermal cycling, dust, and moisture exposure typical of heavy-duty truck, bus, and agricultural machinery operation.
High-Pressure Capability (1,600 bar) – This pump is engineered to generate a maximum rail pressure of 1,600 bar (23,200 psi), ensuring excellent fuel atomisation for complete combustion, reduced fuel consumption, and lower emissions.
Integrated Digital Flow Control Valve (ZME) – The 0445020088 is equipped with a ZME inlet metering solenoid valve (Bosch part number 0928400640 / 1465ZS0086) that precisely regulates the amount of fuel entering the high-pressure section based on ECU demand, delivering accurate rail pressure control and improved throttle response.
High-Pressure Fuel Lubrication – All internal moving parts (plungers, roller shoes, eccentric cam) are lubricated solely by diesel fuel, eliminating external oil lines and ensuring consistent lubrication regardless of engine oil condition.
Direct Bosch CP3S3 Compatibility – This pump features an identical mounting flange (3-bolt triangular SAE pattern), drive gear interface, high-pressure outlet ports, and electrical connector as the original Bosch unit. It is true plug-and-play replacement.
OEM for Foton Lovol GAZ 4.8 Engine – The 0445020088 is produced as an OEM part for the Foton Lovol GAZ 4.8 diesel engine, ensuring factory-level fitment and performance.
2. Compatible Vehicle & Engine Models (≤5)
The 0445020088 pump is specifically calibrated for the MMZ D-245.7 / D-245.9 / D-245.30 / D-245.35 / D-249 Euro 3 and Euro 4 engine family, which has a displacement of 4.75 to 4.8 litres and outputs between 96 and 115 kW. Compatible vehicles include:
PAZ Buses (4234, 3204 series) – Russian midibuses and full-size buses with the MMZ D-245 Euro 3 common rail engine
MAZ Trucks (4370 / 4371 / 150 series) – Medium-duty trucks and chassis-cabs widely used across Eastern European and CIS markets
MTZ BELARUS Tractors (82.1, 1221 series) – 4-cylinder agricultural tractors with the D-245.7E3 engine
ZIL Trucks (4334B1, 5301EE) – Russian medium-duty commercial trucks with the D-245.30E3 engine
AMUR Trucks – A range of light and medium trucks also powered by the MMZ D-245 engine, as well as KAVZ buses and GAZ Sadko 3308 off-road trucks
✅ Important Fitment Note – Before ordering, always verify the Bosch number on your original pump (stamped on the pump nameplate). Confirm your engine code (MMZ D-245.7E3 or similar) and vehicle application. The pump cross‑reference number is also listed as B413030160. The ZME fuel metering valve part number is 0928400640.
3. Common Failures & Installation/Replacement Advice
3.1 Typical Symptoms of a Failing CP3 Pump (0445020088)
Loss of engine power under load – The vehicle struggles to maintain speed on inclines, or the tractor/ excavator has reduced hydraulic power, often accompanied by black exhaust smoke.
Extended cranking time before start – The engine takes longer than normal to start, especially after being parked overnight.
Engine surging or rough idle – Inconsistent fuel delivery at low RPM, causing the engine to hunt or misfire during stationary operation.
DTC codes P0087, P0088, or P0191 – Fuel Rail Pressure Too Low, Too High, or Fuel Pressure Sensor Rationality.
Metal particles in the fuel filter – A clear sign of CP3 internal wear (plunger scuffing or roller bearing failure).
External fuel leakage – Visible diesel wetness around the pump body, particularly at the drive shaft seal or around the ZME metering valve mounting area.
Diesel contamination in engine oil – A failed drive shaft seal allows fuel to enter the timing case and then the engine oil sump. Check for rising oil level and a diesel smell.
3.2 Professional Installation & Replacement Recommendations
Perform a complete fuel system diagnosis – Before pump replacement, use a compatible diagnostic tool (Bosch KTS, or generic scanner with live data) to verify rail pressure values, injector return flow rates, and identify any related faults.
Replace the fuel metering valve (ZME) – If the old pump has failed, it is strongly recommended to replace the ZME solenoid valve (Bosch 0928400640) with a new one at the same time. 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. The CP3 pump is sensitive to contamination, especially after a system failure.
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 critical – debris from a failed pump will quickly destroy a new unit.
Inspect and flow‑test all injectors – Worn or stuck injectors with high return flow will prevent the pump from building correct rail pressure and will cause repeat pump failure. Have all injectors professionally tested and cleaned or replaced as necessary.
Replace the engine oil and filter – If diesel has contaminated the oil, change the oil and filter BEFORE running the new pump.
Prime the low‑pressure circuit – Before starting the engine, 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 and eccentric cam.
Fill the pump with clean diesel – Remove the high-pressure outlet fitting and pour clean, lubricious diesel (or Bosch special 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): 25–30 Nm. High-pressure line union nuts: 40 Nm. Drive shaft nut: consult the vehicle workshop manual (typically 100–120 Nm). Use a calibrated torque wrench for all connections.
Reset fuel adaptations – After installation, use a diagnostic tool 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. Pay special attention to the union nuts for the high‑pressure lines.
Monitor rail pressure – Using live data on your diagnostic tool, verify that actual rail pressure tracks within ±20 bar of specified value across all RPM ranges.
💡 Pro Tip – The MMZ D-245 engine family is commonly found in harsh operating environments (construction, agriculture, and mining). Always drain the water separator daily and use high-quality diesel fuel with proper lubricity. Consider installing an additional 5‑micron secondary fuel filter for extended pump life. The pump also features a pressure limiting valve set at 1,600 bar, which helps protect the common rail and injectors from pressure spikes.
4. Why Choose Rsolid Engine Parts as Your Supplier
✅ Exact Bosch CP3S3 Compatibility – Direct replacement for 0445020088 in all listed PAZ, MAZ, MTZ, ZIL, AMUR, GAZ, and KAVZ applications. Fully compatible with the MMZ D-245 Euro 3 / Euro 4 engine. No modifications required.
✅ OEM Supply – This pump is produced as an OE part for the Foton Lovol GAZ 4.8 engine, ensuring factory-quality fitment and performance.
✅ 100% Calibration Tested – Each pump is run on a Bosch EPS 200 or equivalent test bench to verify delivery volume, rail pressure stability (1,600 bar), ZME regulator response, and leak‑free operation. Test reports are available on request.
✅ 12‑Month Warranty – Full coverage against manufacturing defects for all pumps supplied, even for heavy‑duty commercial and off‑highway applications.
✅ Competitive Pricing for Workshops & Fleets – Volume discounts available for commercial vehicle repair shops, parts distributors, bus fleets, agricultural dealers, and mining equipment operators.
✅ Fast Worldwide Shipping – Stock held in multiple warehouses for rapid dispatch to Eastern Europe, Central Asia, Africa, the Middle East, the Americas, and beyond.
✅ 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
