JPR-S7630 Aftermarket Cummins 6BTA 5.9 M2/6CT8.3M/6CTA8.3M Seawater Pump P1730X | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement 6BTA/6CT/6CTA P1730X Seawater Pump - Part Number: JPR-S7630

New aftermarket engine-cooling seawater pump for Cummins 6BTA5.9-M2, Cummins 6CT8.3M, Cummins 6CTA8.3M. It replaces the listed OEM pump family and is supplied as a complete assembled pump. This is the smaller P1730X-type pump sometimes fitted where the larger JPR-C0830 is not used.

⚙️ Key Features

• Direct aftermarket replacement for JPR-S7630

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

• Spline-drive replacement pump

• Port configuration: P1730X-pattern flange ports

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

🧰 Kit / Assembly Contents

• 1 × Complete seawater pump assembly - Part Number: JPR-S7630

• 1 × Installed impeller - JMP 7608-01K

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

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

• Mounting / installation: Engine mounting seal serviced separately unless supplied

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• JPR-S7630 → Replaces / cross-references Cummins P1730X application family

OEM / Related Numbers:

• Cummins P1730X application family

Aftermarket / Verified Equivalents:

• Sherwood: P1730X

• JMP Marine: JPR-S7630

Service Parts / Kits:

• Major service kit: JMP JSK0067

• Minor service kit: JMP JSM0002

🚤 Compatibility

Commonly used on:

• JMP Marine / Cummins / Sherwood marine engine-cooling systems

Typically suits:

• Engine models:

• Cummins 6BTA5.9-M2

• Cummins 6CT8.3M

• Cummins 6CTA8.3M

• 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: P1730X-pattern flange ports; Spline-drive 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