VolvoEngine Parts

20799907 — Connecting Union Thermostat 20799907 For Volvo Engine Cooling System

This connecting union is a vital part of the engine's cooling system, facilitating the flow of coolant between the engine block and the thermostat housing. Manufactured to precise specifications, it ensures a leak-free connection and proper coolant circulation, unlike a corroded or damaged union. A failing union may lead to coolant leaks, overheating, and a decrease in overall engine cooling efficiency.

Connecting Union Thermostat 20799907 For Volvo Engine Cooling System – Part No 20799907 – 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 Connecting Union
MaterialBrass or coated steel
ApplicationEngine cooling system
Service LifeReplace as needed during cooling system service
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A faulty connecting union may initially cause minor coolant seepage around the connection point. If left unaddressed, these leaks can worsen, leading to significant coolant loss and potential engine overheating.

Installation Tip

Ensure the mating surfaces on both the engine block and the thermostat housing are clean and free of old gasket material before installing the new union. Do not overtighten the fasteners, as this can damage the housing or the union.

Service Note

Inspect the thermostat, radiator hoses, and water pump for signs of wear or leakage when replacing the connecting union.