Details

• Brand:

  

  

• SKU:

  HL3Z-6345-B

• Positions: Inner
• Other Names:

  Bolt Bearing Cap Hex Head

• Description:

  This genuine Ford engine crankshaft main bearing cap bolt secures a main bearing cap to the cylinder block, clamping the crankshaft main journals with the precise, repeatable preload the bottom end depends on for correct bearing crush and oil clearance. It is a hex-head fastener with a fine thread used on the F-150 EcoBoost engine family, and it is installed during any bottom-end rebuild, main bearing replacement, crankshaft removal, or main cap service. This is a torque-to-yield fastener that stretches into its yield range when tightened to the Ford torque-plus-angle specification, so it must never be reused; a reused main cap bolt can lose clamp load and back off, leading to spun bearings, bottom-end knock, and catastrophic engine failure. Always install a new bolt and tighten it exactly to the Ford sequence and angle value with clean, properly lubricated threads as specified. As an OEM fastener it matches the original 10 by 115 millimeter dimension, thread pitch, and material grade so it develops the correct clamp load. Fitment covers the applicable 2017 to 2020 F-150 engines; confirm your engine and main cap position before ordering, and replace every main cap bolt disturbed during service rather than reusing any of them.

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