JPR-CT3412 Aftermarket Caterpillar 3412 Gilkes-Style Seawater Pump 7C3613 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement 3412 Gilkes-Style Seawater Pump - Part Number: JPR-CT3412

New aftermarket engine-cooling seawater pump for Caterpillar 3412, Caterpillar 3412C, Caterpillar 3412D. It replaces the listed OEM pump family and is supplied as a complete assembled pump. For Caterpillar/Gilkes 0R7721 use the JPR-CT3508 family.

⚙️ Key Features

• Direct aftermarket replacement for JPR-CT3412

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

• Gear-driven Gilkes-style pump; drive gear excluded unless stated

• Port configuration: 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-CT3412

• 1 × Installed impeller - Bronze impeller - JMP IMP0026 / Caterpillar 3N8449

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

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

• Mounting / installation: Mounting O-ring supplied with specified complete pumps

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• JPR-CT3412 → Replaces / cross-references 7C3613

• JPR-CT3412 → Replaces / cross-references 7C-3613

• JPR-CT3412 → Replaces / cross-references 3N7790

• JPR-CT3412 → Replaces / cross-references 0R7720

OEM / Related Numbers:

• 7C3613

• 7C-3613

• 3N7790

• 0R7720

Aftermarket / Verified Equivalents:

• Gilkes M Series: 250/700

• Gilkes: 44951-032

• Gilkes: 44951-028

• Gilkes: 44951-012

• JMP Marine: JPR-CT3412

Service Parts / Kits:

• Mechanical seal kit: JMP JMK0002 family

🚤 Compatibility

Commonly used on:

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

Typically suits:

• Engine models:

• Caterpillar 3412

• Caterpillar 3412C

• Caterpillar 3412D

• 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: Gilkes-style flange connections; Gear-driven Gilkes-style pump; drive gear excluded unless stated. 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