Details

• Brand:

  

  

• SKU:

  BL3Z-6A228-A

• Positions: Upper
• Other Names:

  Tensioner, Pulley Assembly Tension, bt111

• Description:

  This is a genuine Ford accessory drive belt tensioner assembly, listed in the Ford catalog under base number 6A228 as Pulley Assembly Tension, also called the serpentine tensioner, for the 5.0L V8. The spring-loaded tensioner maintains correct tension on the serpentine accessory drive belt, keeping the belt tight across the alternator, water pump, power steering, and air conditioning compressor pulleys while damping vibration so the belt does not slip or chirp. It fits 2011-2013 Ford F-150 and 2011-2013 Lincoln Mark LT equipped with the 5.0L V8 gasoline engine. A buyer typically needs this tensioner when they hear belt squeal or chirp on start-up, notice a rattling or grinding pulley bearing, see belt flutter or excessive wobble, or find that a worn internal spring is letting the belt slip and causing charging or overheating issues. Over time the internal spring weakens and the pulley bearing wears, so replacing the complete assembly restores proper belt tension. Inspect the serpentine belt and idler pulleys while the tensioner is off, route the belt per the underhood diagram, and torque the tensioner bolt to Ford specification. Confirm this is the 5.0L application, as other engines in this chassis use a different tensioner. Genuine Ford construction ensures the correct spring rate, pulley alignment, and bearing quality for long quiet service life.

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