Details

• Brand:

  

  

• SKU:

  BT-105

• Other Names:

  Motorcraft™ Belt Tensioner, Motorcraft™ Serpentine Tensioner, Motorcraft™ Tensioner, Motorcraft™ Idler Pulley, Pulley Assembly Tension

• Description:

  This genuine Ford Motorcraft accessory drive belt tensioner assembly (part BT-105) uses a spring-loaded arm and pulley to hold steady tension on the serpentine accessory drive belt, keeping the belt firmly engaged with the crankshaft, alternator, water pump, power steering, and air conditioning pulleys so they turn reliably. It is a service tensioner cataloged across a broad range of 2003-2013 Ford applications from the modular-engine era of that period; because accessory drive layouts differ between engine families and models within those years, confirm this tensioner matches your engine's belt routing before installing. A worn tensioner typically announces itself with a chirp or squeal on cold start, a rattling or knocking noise from the front of the engine that changes with engine speed, a fluttering belt, or a pulley bearing that feels rough or wobbles by hand, and a weak spring can let the belt slip and cause dim lights, a whining accessory, or overheating. Service it with the engine cold and the belt removed, check that the pulley rotates freely and the arm snaps back firmly under spring pressure, and reinstall the belt to the factory routing diagram. Inspect the belt and idler pulleys while access is open and renew the belt if it is glazed, cracked, or contaminated. As a genuine Ford component it is built to the original spring rate, pulley alignment, and bearing specification for a correct, quiet accessory drive. Backed by the Ford and Motorcraft parts warranty.

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