Where does the PCV valve install on the 5.0L HO engine?

The PCV valve inserts into a grommet at the rear of the lower intake manifold, per step 3 of the procedure.

Is the PCV hose different on a Cobra?

Yes. The parts table lists PCV Hose 6A886 for the Mustang only and PCV Hose 6C342 for the Cobra only.

What are the steps to reinstall the PCV valve?

Reinstall the grommet into the lower intake manifold, insert the PCV valve into the grommet at the rear of the lower intake manifold, connect the vent hose to the PCV valve and intake manifold, install the closure tube at the front RH rocker cover and throttle body fitting, then start the engine and check for leaks.

Where does the closure tube connect?

The closure tube installs at the front right-hand (RH) rocker cover and connects to the throttle body fitting.

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Ford Mustang 5.0L HO PCV Valve Assembly Diagram & Installation - Service Manual

PCV valve in-vehicle service steps with figure and part number table

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Step-by-step PCV valve in-vehicle service procedure for a 5.0L engine with a labeled figure and part-number table.

AI caption January 2007 · Photo 35 of 78

This is page 03-01B-8 from a Ford service manual section covering the 5.0L HO engine, under the heading "IN VEHICLE SERVICE (Continued)." It provides the final steps (steps 2 through 6) of a PCV valve installation procedure: reinstalling the grommet into the lower intake manifold, inserting the PCV valve into the grommet at the rear of the lower intake manifold, connecting the vent hose to the PCV valve and intake manifold, installing the closure tube at the front right-hand rocker cover and throttle body fitting, and finally starting the engine to check for leaks. An exploded illustration (figure A16102-A) shows the PCV assembly components in relation to the lower intake manifold with numbered callouts. A parts table identifies each callout: PCV Hose 6A886 (Mustang only) or 6C342 (Cobra only), Grommet 6K780, Lower Intake Manifold 9424B, Element 6A631, and PCV Valve Assembly 6A666. The document distinguishes between standard Mustang and Cobra PCV hoses, indicating applicability to Ford Mustang 5.0L HO models including the Cobra variant. A reader can learn the correct PCV valve installation sequence, component locations, and the Ford base part numbers for all PCV system parts.

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Frequently asked questions

Where does the PCV valve install on the 5.0L HO engine?: The PCV valve inserts into a grommet at the rear of the lower intake manifold, per step 3 of the procedure.
What are the part numbers for the Mustang 5.0L PCV system components?: PCV Hose 6A886 (Mustang only) or 6C342 (Cobra only), Grommet 6K780, Lower Intake Manifold 9424B, Element 6A631, and PCV Valve Assy 6A666.
Is the PCV hose different on a Cobra?: Yes. The parts table lists PCV Hose 6A886 for the Mustang only and PCV Hose 6C342 for the Cobra only.
What are the steps to reinstall the PCV valve?: Reinstall the grommet into the lower intake manifold, insert the PCV valve into the grommet at the rear of the lower intake manifold, connect the vent hose to the PCV valve and intake manifold, install the closure tube at the front RH rocker cover and throttle body fitting, then start the engine and check for leaks.
Where does the closure tube connect?: The closure tube installs at the front right-hand (RH) rocker cover and connects to the throttle body fitting.