Details

• Brand:

  

  

• SKU:

  ML3Z-6L266-A

• Positions: Left
• Other Names:

  Tensioner Timing Chain

• Description:

  This Genuine Ford ML3Z-6L266-A is the primary engine timing chain tensioner for 21-25 F-150 applications. The tensioner mounts inside the engine front-cover compartment and applies hydraulic pressure against the timing chain through its plunger and chain guide, keeping the primary chain taut as it transfers rotation from the crankshaft through the idler sprocket to the camshafts on each bank. Owners replace this tensioner when a cold-start chain rattle from the front of the engine traces to a collapsed plunger that has lost its hydraulic preload, when a timing chain service includes preventive tensioner replacement to address known failure mode of the original spring or plunger, when a stretched primary chain forces the tensioner to its extension limit and the cam timing skips, or when a P0016 or P0017 cam-correlation DTC traces to a tensioner failure. Installation requires the front timing cover to be removed, the chain relieved of tension, the tensioner unbolted with the plunger first held back with a service pin or retainer, and the new tensioner installed in the locked position before the retainer is released to apply tension to the chain.

• Applications: 3.5L.

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