JMP C1900 Aftermarket Cummins KT19/KTA19M Seawater Pump 3049158, 3074540 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement KT19/KTA19M Gilkes-Style Seawater Pump - Part Number: JPR-C1900

New aftermarket engine-cooling seawater pump for Cummins KT19M, Cummins KTA19M, KTA19M3 and KTA19M6, Cummins KTA19-D(M) and KTA19-D(M1). It replaces the listed OEM pump family and is supplied as a complete assembled pump. For Cummins 3866609/Jabsco 18770-0003 use JPR-C1905.

⚙️ Key Features

• Direct aftermarket replacement for JPR-C1900

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

• Engine-driven Gilkes-style pump

• Port configuration: Large Gilkes-style flange connections

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

🧰 Kit / Assembly Contents

• 1 × Complete seawater pump assembly - Part Number: JPR-C1900

• 1 × Installed impeller - Installed rigid/bronze Gilkes-style impeller

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

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

• Mounting / installation: Mounting seal supplied according to package

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• JPR-C1900 → Replaces / cross-references 3049158

• JPR-C1900 → Replaces / cross-references 3074540

OEM / Related Numbers:

• 3049158

• 3074540

Aftermarket / Verified Equivalents:

• Gilkes: 44955-052 family

• JMP Marine: JPR-C1900

Service Parts / Kits:

• Major service kit: JMP JSK0122

🚤 Compatibility

Commonly used on:

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

Typically suits:

• Engine models:

• Cummins KT19M

• Cummins KTA19M, KTA19M3 and KTA19M6

• Cummins KTA19-D(M) and KTA19-D(M1)

• 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: Large Gilkes-style flange connections; Engine-driven Gilkes-style 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