GM30881 / GM344928 Aftermarket Kohler Part | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Kohler Part - Replacement Part Number: GM30881 / GM344928

Large heat exchanger for Kohler EFOZD/EOZD marine generator sets.

⚙️ Key Features

• Marine-grade shell-and-tube heat exchanger

• Designed as a direct replacement for the listed reference numbers

• Helps maintain stable operating temperature under sustained marine load

• Marine connection sizes and mounting points must match the original assembly

• Suitable for professional marine cooling-system service and replacement

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• GM344928 → Later related replacement for GM30881

OEM / Related Numbers:

• GM30881

• GM344928

Aftermarket / Verified Equivalents:

• Mr Cool: MRCGM30881 / MRCGM344928

• Seakamp: GM30881 replacement

🚤 Compatibility

Commonly used on:

• Marine-grade shell-and-tube heat exchanger systems

Typically suits:

• Engine models:

• Kohler 23EFOZD

• 25EFOZD

• 27EFOZD

• 28EFOZD

• 32EOZD

• Body Diameter: approximately 3-1/8 in

• Overall Length: approximately 21 in

🔌 Function

The heat exchanger keeps closed-loop coolant separate from seawater while transferring heat through the tube stack.

Common signs of failure:

• Engine or generator temperature rises above normal under load

• Coolant loss or seawater leakage around the exchanger

• Restricted seawater flow from scale, debris or damaged tubes

• Coolant contamination caused by an internal tube failure

• Corroded end covers, tube stack or sacrificial anode

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging