22295879 Thermostat | Genuine Volvo Penta Part

🔧 Product Description

Thermostat for the dual cooling circuit on TWD16 generator engines. It is documented in the later dual-circuit arrangement and regulates coolant flow through thermostat housing 23554205.

🚤 Compatibility

Typically suits:

• Volvo Penta TWD1643GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1672-1673GE

• Engine Family: TWD

⚙️ Key Features

• Exact TWD1643/TWD1652/TWD1653/TWD1663/TWD1672/TWD1673/TWD1683 fitment
• Dual-cooling-circuit control
• Used with thermostat housing 23554205
• Engine type: 16-litre 6-cylinder turbocharged generator diesel

🔌 Function

Regulates coolant flow between the engine and cooling circuits to maintain operating temperature.

⚠️ Common Signs of Failure

• Engine runs cold
• Temperature fluctuates
• Thermostat stuck closed/open
• Coolant leakage at housing

🛠️ Service Notes

• Let the engine cool fully and drain coolant to below the housing before opening it, catching what comes out
• Clean both faces of the housing without scoring them, and fit a new gasket or sealing ring with the thermostat — the old seal should never be reused
• Fit the thermostat the right way round, with the sensing element towards the engine and any vent or bleed hole positioned as the original was, and check it is properly seated before the cover goes on
• Pull the housing fasteners down evenly and to the figure in the workshop manual for your engine; an unevenly tightened cover distorts and weeps
• Refill with the specified coolant, vent the system, then run up to temperature and check both for leaks and that the engine reaches and holds its normal running temperature

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 23554205 (thermostat housing)

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging