VolvoEngine Parts

1544389 — Thermostat 3831426 1544389 For Volvo Penta Engine D6A D70 D7C Td101G Td101Gk Td102K Td103K Td121 Td70 Aqad40A Aqad40B

This thermostat is a crucial regulating valve in the engine's cooling system, controlling the flow of coolant to maintain optimal operating temperature. It opens and closes based on coolant temperature, ensuring the engine doesn't overheat or run too cold, unlike a faulty thermostat which can become stuck open or closed. Operators may notice the engine temperature gauge fluctuating erratically, the engine running too cool, or experiencing overheating issues when this thermostat fails.

Thermostat 3831426 1544389 For Volvo Penta Engine D6A D70 D7C Td101G Td101Gk Td102K Td103K Td121 Td70 Aqad40A Aqad40B – Part No 1544389 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeThermostat
MaterialBrass, Stainless Steel, Rubber Seal
ApplicationEngine Cooling System
Service LifeReplace every 2,000 hrs or 2 years
Compatibility3831426
ConditionNew — OEM specification aftermarket

Failure Symptoms

A malfunctioning thermostat may cause the engine temperature gauge to read higher than normal, indicating potential overheating. Alternatively, the engine may struggle to reach its optimal operating temperature, leading to reduced efficiency and increased wear. If the thermostat fails in the closed position, it can quickly lead to severe engine overheating and potential damage.

Installation Tip

Always drain the cooling system to the level below the thermostat housing before removal to prevent coolant spillage. Ensure the new thermostat is oriented correctly, with the spring mechanism facing the correct direction as per the service manual.

Service Note

Inspect the radiator, water pump, and coolant hoses for leaks or blockages when replacing the thermostat.