The Cummins Engine Water Pump (Part Number 4376357) is a high-quality cooling system component engineered to deliver consistent and reliable coolant circulation for Cummins B6.7, ISC, ISL, ISL9, L9, L9N, QSB6.7, and QSC8.3 diesel engines. This water pump plays a critical role in regulating engine operating temperature, preventing overheating, and protecting vital engine components.
Manufactured to OEM specifications, the 4376357 water pump features a precision-machined housing, durable bearings, and a high-efficiency impeller to ensure optimal coolant flow under demanding operating conditions. Its robust construction is designed to withstand continuous heavy-duty use, high temperatures, and vibration commonly found in commercial, industrial, and off-highway applications.
A failing water pump can lead to coolant leaks, engine overheating, reduced performance, and costly engine damage. Replacing it with the Cummins 4376357 water pump restores proper cooling system function, improves engine reliability, and supports long service life. This water pump is ideal for routine maintenance, engine rebuilds, and fleet service operations.
✔ PRODUCT FEATURES & COMPONENTS
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Engine water pump assembly
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Cummins part number: 4376357
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OEM-grade housing and impeller design
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High-efficiency coolant flow
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Heavy-duty bearings and seals
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Designed for continuous operation
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Resistant to heat, pressure, and vibration
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Direct-fit replacement for compatible Cummins engines
✅ ENGINE COMPATIBILITY
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Cummins B6.7
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Cummins ISC
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Cummins ISL
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Cummins ISL9
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Cummins L9
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Cummins L9N
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Cummins QSB6.7
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Cummins QSC8.3
✅ VEHICLE & EQUIPMENT APPLICATIONS
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Commercial trucks and buses
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Construction and industrial machinery
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Agricultural equipment
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Generator sets and power units
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Fleet and vocational vehicles using Cummins engines
✅ KEY FEATURES & BENEFITS
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Maintains optimal engine operating temperature
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Prevents overheating and coolant loss
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Ensures consistent coolant circulation
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OEM-quality fit, performance, and durability
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Designed for heavy-duty diesel applications
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Supports long-term engine reliability
Which engines use Cummins water pump 4376357?
Water pump 4376357 fits Cummins B6.7, ISC, ISL, ISL9, L9, L9N, QSB6.7, and QSC8.3 diesel engines.
What does the engine water pump do?
The water pump circulates coolant through the engine to regulate temperature and prevent overheating.
What are signs of a failing water pump?
Common signs include coolant leaks, engine overheating, unusual noises, and fluctuating engine temperature.
Is Cummins 4376357 an OEM replacement water pump?
Yes, Cummins 4376357 meets OEM specifications for proper fit, cooling performance, and durability.




