Details

• Brand:

  

  

• SKU:

  ML3Z-8620-H

• Other Names:

  V Belt

• Description:

  This is the genuine Ford serpentine belt for the alternator drive on 21-25 Ford F-150 with the 2.7L EcoBoost. This part number supersedes the earlier ML3Z-8620-E and JK6703A service belts. The belt is engineered to the precise Ford length and rib profile required by the 2.7L accessory drive layout, which differs from the 3.5L EcoBoost and 3.5L PowerBoost routings on the same chassis. A worn belt produces low-voltage faults, charge system warnings, alternator squeal under high electrical load, or visible cracking and chunking along the rib face. Inspect the tensioner and any idler pulleys whenever the belt is off; replace any pulley showing roughness, lateral play, or seal weep at the same service. Confirm correct routing against the underhood placard or the Ford service manual diagram before tensioning, paying close attention to wrap direction at the alternator and water pump. After installation, monitor charging voltage at idle and under load, and inspect the belt for proper tracking with the engine running. Use only Ford-spec parts on this engine family; mismatched non-OEM belts commonly cause tensioner fatigue and accelerated pulley bearing wear, and may store charging system fault codes.

• Replaces:

  JK6703A, ML3Z8620E

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