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Function: Provides efficient torque transfer
Compatibility Notes: Designed to integrate with factory air suspension and electronic ride height sensors
and ensures compliance with lighting standards
thus improving fuel efficiency and engine life
Belt Tensioner 3979979 20935521 21422765 for Volvo FH & FM Trucks (2010–2024) HOWO Function: Provides efficient torque transferProduct Overview Part Name: Engine Belt Tensioner Part Numbers: 3979979 20935521 3979579 20739751 21422765 21819687 7403979979 Vehicle Compatibility: Suitable for Volvo FH and Volvo FM trucks equipped with Euro 4, Euro 5 and Euro 6 engines between 20102024. Ensures correct auxiliary belt tension for alternator, water pump and compressor systems. Configuration: Constructed with a hardened steel pulley, sealed high load bearing and precision spring arm.
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