Volvo 20799907 Coolant Pipe Connecting Union

Volvo 20799907 coolant pipe connecting union functions as a thermostat housing adapter within the engine cooling circuit. The component connects the coolant pump to the thermostat housing on Volvo D7E series truck engines and Volvo Penta TAD734GE industrial marine engines. Manufactured to OE specifications for coolant flow integrity and thermal cycling resistance. Cross-reference interchange includes Volvo 21364517, 7420799907, 7421364517, 04257316, 04906985 and Renault Trucks 7421364517. Aftermarket equivalents supplied by DT Spare Parts (215985) and LA (77709509). Net weight 95 grams. Constructed from aluminum alloy or reinforced polymer depending on production batch. Designed for direct fitment without modification.