Water Pump Assembly – Left Bank
EMD Part No.: 40004234DLW Part No.: 16070100
Water Pump Assembly – Left Bank
Application: EMD 710-series / WDP4–WDG4 locomotive engines
Part of our Water pump product line
The Water Pump Assembly – Left Bank is a critical engine cooling-system component used on EMD locomotive engines. EMD Part No. 40004234 is cross-referenced with DLW Part No. 16070100 in Indian Railways documentation as the water pump assembly for the left bank. The assembly is designed to maintain continuous coolant circulation through the engine cooling circuit, helping control operating temperature during demanding locomotive service — reliable water-pump performance is essential for effective heat transfer and reducing the risk of engine overheating. For procurement and maintenance, the part should be identified using the correct EMD and DLW part numbers, application, configuration, and applicable technical drawings/specifications.
How This Part Works
The primary function of the left-bank water pump assembly is to circulate engine coolant through the cooling system: maintaining the required coolant flow through the cooling circuit, supporting effective removal of heat generated during engine operation, helping maintain stable operating temperatures under varying loads, providing dependable circulation during continuous and high-load locomotive operation, and working as part of the engine's wider cooling system to protect critical components from excessive thermal stress. Water-pump assemblies contain rotating and sealing components that operate continuously, so the condition of the pump, shaft, impeller, bearings, seals, and associated components is central to dependable cooling-system performance.
Signs It's Time to Replace
- Coolant leakage: leakage around the pump assembly can indicate deterioration of seals or related sealing surfaces
- Reduced coolant circulation: a worn or damaged pump may not maintain the required coolant flow
- Engine overheating: abnormally high operating temperatures can be associated with inadequate coolant circulation and should be investigated promptly
- Unusual noise or vibration: changes in pump operating noise or vibration may indicate wear in rotating components, bearings, shafting, or related parts
- Seal-related issues: deteriorated water-pump seals can result in coolant leakage and reduced assembly reliability
- Visible component wear: inspection may reveal wear, corrosion, damage, or deterioration of pump components
- Repeated cooling-system problems: recurring temperature or coolant-circulation issues warrant inspection of the pump and complete cooling circuit rather than replacing components without diagnosis
At Apex, we focus on supplying critical locomotive components with an emphasis on part-number accuracy, application suitability, and dependable quality. For the Water Pump Assembly – Left Bank, that means correct part identification against the specified EMD 40004234 / DLW 16070100 reference, sourcing and technical evaluation suited to EMD locomotive applications, attention to dimensional accuracy and assembly consistency, and pump components evaluated for fit, sealing, rotation, and functional performance before supply. The part is officially listed in Indian Railways records as Water Pump Assembly LB, DLW Part No. 16070100, corresponding to EMD Part No. 40004234, and also appears in Indian Railways/BLW approved-vendor documentation under the same reference — which is why we help customers identify the correct replacement by equipment, part number, and specification rather than a generic match.
See all Water pump parts →- Engine Compatibility
- EMD 645 & EMD 710 Series
- Applications
- Locomotive · Marine · Power Generation
- Quality Standard
- ISO 9001:2015 Certified · OEM Grade
OEM GradeExport QualityReady Stock
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