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Water Pump ME994451 ME 994451 for Mitsubishi 4M50 4M51 Fuso Canter — 98mm Impeller OEM
Product Overview
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.
How It Works
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.
Abnormal Cooling System Pressure — Large temperature difference between upper and lower hoses; radiator fan cycles frequently (reduced pump efficiency)
Verified Data (2025 Algorithm Signals)
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
Brand Cross-Reference: Febi 47442, Blue Print ADC49167
100% Factory Tested: Every pump undergoes flow, pressure, seal, and dynamic balance testing
Warranty: 12 months
Product Specifications
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
Vehicle & Engine Compatibility
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
Important Notes
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
Features & Benefits
98mm Large Diameter Impeller
Provides ample coolant flow for 4M50/4M51 engines to maintain optimal operating temperatures — 98mm impeller diameter, exact match to OEM specifications
Metal Pump Housing
High strength, corrosion resistance, and thermal shock resistance for engine environments — metal construction ensures long-term reliability
Precision Bearings & Mechanical Seal
Smooth operation, low noise, extended service life — dual seal design prevents coolant leakage
Complete Assembly (with Gasket)
Ready to install out of the box — includes pump housing, impeller, and gasket, saving installation time
1.6kg Standard Weight
Exact match to OEM specifications — ensures proper inertia and installation stability
Febi/Blue Print International Brand Quality
Well-known international brand specifications — Febi 47442, Blue Print ADC49167 equivalent
Broad Compatibility
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
100% Factory Flow/Pressure Tested
Every pump undergoes strict flow, pressure, seal, and dynamic balance testing — ready to install, quality assured
12-Month Warranty
Peace of mind on manufacturing defects — free replacement within warranty period
Quality Control & Verification
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
Installation & Maintenance Recommendations
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):
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
