23594887 Thermostat Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D4 G-Series Heat-Exchanger Thermostat Kit - Part Number: 23594887

A genuine Volvo Penta coolant thermostat package installed in the heat-exchanger housing of selected D4 G-series engines. The thermostat controls the main closed-circuit coolant flow through the heat exchanger.

Kit Contents:

• 1 × calibrated coolant thermostat - serviced under 23594887

• 1 × O-ring - 3583830

• 1 × O-ring - 3583831

• 1 × O-ring - 3583832

⚙️ Key Features

• Genuine Volvo Penta D4-G thermostat kit

• Correct Volvo Penta part number 23594887

• Installed in heat-exchanger housing 23397955 / 40005783 family

• Includes the three associated housing O-rings

• Engine and heat-exchanger serial number determine fitment

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 23594887 current D4-G heat-exchanger thermostat-kit reference

OEM / Related Numbers:

• 23594887

• VOE23594887

• 3583830

• 3583831

• 3583832

• 23042274

• 23397955

• 40005783

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• D4 G-series closed-circuit cooling systems

• Heat-exchanger thermostat service

Typically suits:

• Engine / drive models:

• D4-145I-G

• D4-150A-G

• D4-175I-G

• D4-230A/I-G

• D4-270A/I-G

• D4-300A/I-G

• D4-320A/I-G where specified

• Engine Type: Volvo Penta D4 G-series marine diesel

• Serial Range: Heat-exchanger housing and complete engine serial-number controlled

🔌 Function

The thermostat regulates coolant flow through the heat exchanger so the engine reaches and maintains the designed operating temperature.

Common signs of failure:

• Engine overheats or runs too cool

• Temperature fluctuates under load

• O-rings leak at the housing

• Thermostat sticks or corrodes

• Incorrect thermostat fitted to the heat-exchanger version

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging