229280 Aftermarket Kohler Heat Exchanger | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Generator Heat Exchanger - Replaces Part Number: 229280

New copper-nickel heat exchanger replacing Kohler 229280. The approximately 2-inch × 16-inch assembly is used on compact Kohler marine generator sets including 4/6.5EFOZ, 5/8EOZ and specified 6.5/8EFOZD versions.

⚙️ Key Features

• Direct replacement for Kohler 229280

• Approximately 2-inch diameter × 16-inch length

• Copper-nickel seawater tube bundle

• Compact generator-set configuration

• Uses serviceable end-cap and zinc components

🧰 Kit / Assembly Contents

• 1 × Complete heat exchanger assembly - P/N 229280

• 1 × Integrated copper-nickel tube bundle

• End cap - Kohler service family GM24940 where specified

• End-cap gasket - Kohler service family GM24941 where specified

• Sacrificial zinc - Kohler P/N 260085 where specified

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 229280 (Kohler OEM heat-exchanger reference)

• 359398 is a distinct exchanger used on later/specified EFOZD variants and must not be substituted without model confirmation

OEM / Related Numbers:

• GM24940

• GM24941

• 260085

Aftermarket / Verified Equivalents:

• Mr Cool: MRC229280CN

• Seakamp: 229280CN

• Lenco: LE229280

🚤 Compatibility

Commonly used on:

• Kohler compact closed-cooled marine generator sets

Typically suits:

• Engine / Equipment models:

• 4EFOZ and 6.5EFOZ

• 5EOZ and 8EOZ

• 6.5EFOZD and 8EFOZD specification variants that list 229280

• Output / Engine Rating: Approximately 4kW - 8kW generator output

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

• Year Range: Model- and specification-dependent Kohler production

• Serial / Model Identification: Confirm the specification number because some EFOZD variants use Kohler 359398 instead.

🔌 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