Water Pump with 98mm Impeller and Metal Housing for Mitsubishi 4M50 4M51 OEM Replacement
| Impeller Diameter: | 98mm | Unit Weight: | 1.6kg |
| Housing Material: | Metal | Included Accessories: | Pump Housing, Impeller, Gasket |
| Engine Compatibility: | Mitsubishi 4M50, 4M51, 4 | Cooling Type: | Engine Coolant Circulation |
| High Light: | 98mm Impeller Water Pump,Metal Housing Water Pump,OEM Replacement Water Pump |
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The Water Pump Assembly with OEM numbers ME994451 / ME 994451 (cross-reference ME994522, ME994441, ME994025, ME995072, ME993898) is a verified direct-fit replacement for Mitsubishi 4M50 / 4M51 series diesel engines. This water pump is a critical component of the engine's coolant circulation system, widely used in Mitsubishi Fuso Canter FE / BE / FG series trucks and Rosa buses.
The water pump is driven by the engine crankshaft via a belt. The impeller rotates at high speed inside the pump housing, creating centrifugal force that draws coolant from the radiator, pressurizes it, and pushes it through the engine block and cylinder head water jackets to absorb heat before returning to the radiator for cooling. This water pump assembly features a 98mm diameter impeller with a metal housing and precision bearings for long-term reliable operation.
Replace immediately if any occur:
- Engine Overheating — Temperature gauge reads high; engine overheat warning light illuminates (damaged impeller or seized bearings causing insufficient coolant flow)
- Water Pump Noise — Squealing or grinding noises from the pump area during operation (worn bearings or loose impeller)
- Coolant Leakage — Visible coolant seepage from the pump weep hole (failed mechanical seal)
- Poor Cabin Heating — Heater performance degraded (insufficient pump flow to heater core)
- Abnormal Cooling System Pressure — Large temperature difference between upper and lower hoses; radiator fan cycles frequently (reduced pump efficiency)
- Installation Success Rate: 98.5% direct fitment rate — confirmed across 156 repair orders (Jan 2024 – Jun 2025)
- Impeller Diameter: 98mm — exact match for 4M50/4M51 engine cooling system flow requirements
- Unit Weight: 1.6kg — standard weight for correct inertia and installation stability
- Housing Material: Metal — high strength and corrosion resistance for reliable operation
- Included Accessories: Pump housing, impeller, gasket — ready to install
- Cross-Reference Numbers: ME994522, ME994441, ME994025, ME995072, ME993898
- Engine Compatibility: Mitsubishi 4M50, 4M51, 4900, 5200
- Brand Cross-Reference: Febi 47442, Blue Print ADC49167
- 100% Factory Tested: Every pump undergoes flow, pressure, seal, and dynamic balance testing
- Warranty: 12 months
| Part Number: | ME 994451 |
| Product Name: | Water Pump |
| Car Model: | Fuso Canter |
| Engine Model: | 4M50 4M51 |
| Condition: | 100% Brand New |
| Material: | High-strength aluminum alloy & precision bearings |
| Cooling Type: | Engine coolant circulation |
| Installation: | Direct OEM replacement |
| Quality Standard: | OEM equivalent / ISO quality control |
Primary Applications:
| Brand | Model | Chassis | Engine |
|---|---|---|---|
| Mitsubishi Fuso | Canter | FE82, FE83 | 4M50 / 4M51 |
| Mitsubishi Fuso | Canter | FE50E, FE51E, FE52E, FE53E | 4M50 / 4M51 |
| Mitsubishi Fuso | Canter | FE59E, FE62E, FE63E | 4M50 / 4M51 |
| Mitsubishi Fuso | Canter | FE69E, FE70E, FE71E, FE72E, FE73E | 4M50 / 4M51 |
| Mitsubishi Fuso | Canter | FE78E, FE82E, FE83E, FE88E | 4M50 / 4M51 |
| Mitsubishi Fuso | Canter | FG73E | 4M50 / 4M51 |
| Mitsubishi Fuso | Fuso | FK71D | 4M50 / 4M51 |
| Mitsubishi | Rosa | BE644, BE654, BE632, BE642 | 4M50 / 4M51 |
| Mitsubishi Fuso | Canter | FE83D, FE84D, FE85D, FG84D | 4M50-3AT7 4.9L |
Detailed Engine Compatibility:
| Engine Model | Displacement | Description |
|---|---|---|
| 4M50 | 4.9L | 4-cylinder diesel engine |
| 4M51 | 5.2L | 4-cylinder diesel engine |
| 4900 | 4.9L | 4-cylinder diesel engine |
| 5200 | 5.2L | 4-cylinder diesel engine |
- The water pump is a critical component of the engine cooling system — failure causes engine overheating, potentially leading to engine seizure, cylinder head warpage, or catastrophic engine failure
- Recommended to replace coolant and thermostat simultaneously when replacing the water pump
- Use the new gasket provided and torque mounting bolts to workshop manual specification
- Bleed air from the cooling system and check for leaks after installation
- For 100% accurate fitment, please provide VIN (Chassis Number) or chassis code
Provides ample coolant flow for 4M50/4M51 engines to maintain optimal operating temperatures — 98mm impeller diameter, exact match to OEM specifications
High strength, corrosion resistance, and thermal shock resistance for engine environments — metal construction ensures long-term reliability
Smooth operation, low noise, extended service life — dual seal design prevents coolant leakage
Ready to install out of the box — includes pump housing, impeller, and gasket, saving installation time
Exact match to OEM specifications — ensures proper inertia and installation stability
Interchangeable with ME994522, ME994441, ME994025, ME995072, ME993898 — flexible sourcing
Well-known international brand specifications — Febi 47442, Blue Print ADC49167 equivalent
Fits Mitsubishi Fuso Canter FE82/FE83/FE50E/FE51E/FE52E/FE53E/FE62E/FE63E/FE69E/FE70E/FE71E/FE72E/FE73E/FE78E/FE82E/FE83E/FE88E, FG73E, FK71D and Rosa BE644/BE654/BE632/BE642
Every pump undergoes strict flow, pressure, seal, and dynamic balance testing — ready to install, quality assured
Peace of mind on manufacturing defects — free replacement within warranty period
| QC Item | Verification Method | Standard |
|---|---|---|
| Housing Material | Spectrographic analysis | Meets metal material standard |
| Impeller Diameter (98mm) | Precision gauge | ±0.5mm tolerance |
| Critical Dimensions | CMM coordinate measuring machine | Mounting holes and shaft bore meet OEM standards |
| Dynamic Balance Test | Dynamic balancing machine | Meets OEM balance specifications |
| Flow Test | Dedicated flow test bench | Flow rate meets OEM specifications |
| Pressure Test | Hydraulic test bench | Seal integrity meets OEM standards, no leakage |
| Bearing Operation Test | Rotation test bench | Smooth rotation, no binding, no abnormal noise |
| Visual Inspection | 100% visual inspection | No casting defects, rust, or machining flaws |
IMPORTANT: The water pump is a critical component of the engine cooling system. Improper installation may cause coolant leakage and engine overheating. Installation should be performed by qualified professionals. Ensure the engine is completely cooled before installation.
Installation Guidelines (Refer to workshop manual):
- Safety Prep — Ensure engine is completely cooled; disconnect battery negative terminal
- Drain Coolant — Open radiator drain valve; drain coolant to below pump connection level
- Remove Old Pump — Loosen pump belt; remove pump mounting bolts; remove old pump (catch draining coolant)
- Clean Mounting Surface — Thoroughly clean engine block water pump mounting surface (must be clean for new gasket to seal)
- Inspect Mounting Surface — Check for corrosion, scoring, or warping
- Install New Gasket — Place new gasket on pump mounting surface; ensure alignment dowels are aligned
- Install New Pump — Mount new pump to engine block; torque mounting bolts to workshop manual specification
- Install Belt — Install pump belt; adjust tension to specification
- Refill Coolant — Fill with Mitsubishi-specified coolant to proper level
- Bleed Air — Start engine; open bleed screw; bleed air from cooling system
- Check for Leaks — Idle engine; check pump connections for leaks
- Check Level — After engine reaches operating temperature, recheck coolant level and top up as needed
Maintenance Schedule:
| Item | Interval |
|---|---|
| Cooling System Inspection | Every 20,000 km or 12 months |
| Water Pump Inspection | Check for leaks and noise during each service |
| Water Pump Replacement | When leaks, noise, bearing play are found; or at 200,000 km |
- Packaging: Neutral carton / Branded color box / Custom branded packaging
- Packaging Unit: 1 piece/box
- Unit Weight: 1.6kg
- MOQ: Small orders accepted; volume discounts available
- Target Customers: Truck parts wholesalers, repair chain stores, fleet purchasers, cross-border e-commerce sellers
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