Details

• Brand:

  

  

• SKU:

  AT4Z-6345-A

• Positions: Inner
• Other Names:

  Bolt Bearing Cap Hex Head

• Description:

  This is a genuine Ford OEM engine crankshaft main bearing cap bolt for the 3.5L and 3.7L Cyclone V6 engine family, cataloged by Ford as a hex-head bearing cap bolt. It clamps the lower main bearing cap to the cylinder block, securing the crankshaft main bearings and maintaining correct bearing crush and main-bore alignment so the crankshaft spins true under load. This inner-position bolt has a coarse-thread 13mm hex head and measures M10 by 94mm, threading into the bottom of the main bearing cap. It applies to a wide range of 2007 through 2016 Ford vehicles built on the Cyclone V6 platform, including Edge, Explorer, Flex, Taurus, Fusion and F-150 with the 3.5L or 3.7L engine, and it supersedes the earlier 7T4Z-6345-AA reference. Technicians need these bolts during a crankshaft, main bearing, or short-block rebuild, or any time the main caps have been removed. Because main bearing cap bolts are torque-to-yield fasteners that permanently stretch when tightened, they are single-use and must never be reused; always install new bolts and tighten them following the exact Ford torque-plus-angle sequence to achieve the correct clamp load. Reusing a stretched bolt risks inadequate bearing crush, spun bearings, or main-cap walk. Note that some service engines use a fine-thread variant, so confirm your thread pitch before ordering.

• Replaces:

  7t4z6345aa

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