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Alliant Power New Water Pump - Cummins ISB 3.9L/4.4L/5.9L/6.7L
Product details
Alliant Power New Water Pump - Cummins ISB 3.9L/4.4L/5.9L/6.7L
Alliant Power part AP63303 is a coolant/water pump for Verify exact engine and vehicle fitment before ordering. It circulates engine coolant through the block, cylinder heads, radiator and related cooling circuits.
Alliant Power components are matched by exact part number because connectors, calibration ranges, pump revisions and engine serial/model-year changes can differ even within the same engine family.
Key Features
- Application-specific coolant-pump assembly
- Designed to restore factory coolant circulation
- Direct service replacement
- Supports stable engine temperature under load
Fitment
Verify exact engine and vehicle fitment before ordering
Important Installation Notes
- Verify exact year, engine, emissions configuration and OE cross-reference before ordering.
- Inspect thermostat(s), belt drive, fan clutch and coolant condition during pump replacement.
Product Information
- Manufacturer: Alliant Power
- Manufacturer Part #: AP63303
- Product Type: Water Pump
- Catalog detail: Alliant Power New Water Pump Part #: AP63303 OE-style replacement water pump supplied with mounting seal for supported Cummins ISB applications.
How do I verify fitment?
Match the product fitment information to your exact year, make, model, engine, drivetrain and configuration. If anything is unclear, email sales@hilltopdieselperformance.com before ordering.
Where can I find shipping and return information?
Policy links are available in the site footer and checkout. Product-specific restrictions or core requirements are shown in the product description when applicable.
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