359398 Aftermarket Kohler 6.5/8.0 EFOZD Heat Exchanger 30879 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Generator Heat Exchanger - Replaces Part Number: 359398

New copper-nickel replacement heat exchanger for Kohler 359398 and GM30879. It is used on specified 6.5kW 50Hz and 8.0kW 60Hz EFOZD generator versions.

⚙️ Key Features

• Replaces Kohler 359398 and GM30879

• Approximately 2.5-inch diameter × 10.5-inch configuration

• Copper-nickel seawater bundle

• Designed for specified EFOZD generator versions

• Uses Kohler sacrificial zinc 260085/9-032 family

🧰 Kit / Assembly Contents

• 1 × Complete heat exchanger assembly - P/N 359398

• 1 × sacrificial zinc - Kohler P/N 260085 / replacement 9-032

• End cover and gasket service components are renewed separately unless included

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 359398 ↔ Cross-references GM30879

OEM / Related Numbers:

• GM30879

• 359398-S

• 260085

• 9-032

Aftermarket / Verified Equivalents:

• Mr Cool: MRCGM30879

• Seakamp: 359398-S copper-nickel exchanger

• Lenco: LE359398

🚤 Compatibility

Commonly used on:

• Kohler EFOZD closed-cooled marine generator sets

Typically suits:

• Engine / Equipment models:

• 6.5EFOZD 50Hz specification variants

• 8.0EFOZD 60Hz specification variants

• Output / Engine Rating: 6.5kW - 8.0kW generator output

• Engine / System Type: Closed-cooled marine diesel generator engine

• Year Range: Specification-dependent EFOZD production

• Serial / Model Identification: Confirm generator specification; some related EOZ/EFOZD units use Kohler 229280.

🔌 Function

The heat exchanger transfers engine or generator coolant heat into the raw-water circuit while keeping the two fluids separated. This maintains the correct closed-circuit operating temperature and protects the engine from direct seawater circulation.

Common signs of failure:

• Engine or generator overheating under sustained load

• Coolant loss without an obvious external hose leak

• Saltwater and coolant cross-contamination

• Restricted raw-water discharge or uneven end-cap temperature

• Corrosion, green staining, cracked solder joints or pressure-test failure

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging