JPR-CT0440 Aftermarket Caterpillar C4.4 Seawater Pump | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement C4.4 Seawater Pump - Part Number: JPR-CT0440

New aftermarket engine-cooling seawater pump for Caterpillar C4.4 marine and generator engines, Perkins 1104/C4.4-based marine applications using Caterpillar 4255412. It replaces the listed OEM pump family and is supplied as a complete assembled pump. Confirm C4.4 pump number and port orientation; it is not interchangeable with JPR-CT3054.

⚙️ Key Features

• Direct aftermarket replacement for JPR-CT0440

• Heavy-duty marine-grade bronze or corrosion-resistant pump construction

• Gear-driven direct replacement pump

• Port configuration: Engine-specific hose/pipe connections

• Serviceable flexible-impeller design with replaceable cover, cam, seal, shaft and bearings

🧰 Kit / Assembly Contents

• 1 × Complete seawater pump assembly - Part Number: JPR-CT0440

• 1 × Installed impeller - Installed flexible impeller - JMP service family for JPR-CT0440

• 1 × Installed shaft, bearing, cam and mechanical-seal assembly

• 1 × Installed end cover with gasket or O-ring sealing system

• Mounting / installation: Pump-to-engine seal supplied or ordered according to package

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• JPR-CT0440 → Replaces / cross-references 4255412

• JPR-CT0440 → Replaces / cross-references 425-5412

OEM / Related Numbers:

• 4255412

• 425-5412

Aftermarket / Verified Equivalents:

• JMP Marine: JPR-CT0440

• Jabsco cross-reference family supplied for 4255412 applications

Service Parts / Kits:

• JMP major and minor service kits matched to JPR-CT0440

🚤 Compatibility

Commonly used on:

• JMP Marine / Caterpillar / Perkins marine engine-cooling systems

Typically suits:

• Engine models:

• Caterpillar C4.4 marine and generator engines

• Perkins 1104/C4.4-based marine applications using Caterpillar 4255412

• HP / Output Range: Engine- or generator-rating dependent

• Engine Type: Marine diesel, petrol or generator engine as listed above

• Year Range: Engine-model, arrangement and serial-number dependent

• Port / Drive Identification: Engine-specific hose/pipe connections; Gear-driven direct replacement pump. Confirm rotation, shaft/gear style, flange, port direction and mounting seal before ordering.

🔌 Function

The engine-driven flexible-impeller seawater pump draws raw water through the vessel's intake and strainer, then circulates it through the heat exchanger, charge-air cooler, exhaust mixer and other seawater-cooled components. Adequate flow is essential for controlling engine and exhaust temperatures.

Common signs of failure:

• Engine or exhaust temperature rises above normal

• Weak or absent seawater discharge at the exhaust outlet

• Impeller blades are cracked, missing, swollen or permanently set

• Water leaks from the pump cover, shaft seal, drain hole or mounting flange

• Bearing noise, shaft play or a seized pump drive

📦 Condition

• New aftermarket replacement seawater pump

• Brand new

• Supplied in original or equivalent packaging