What is the Ford part number for the PCV valve and elbow assembly?

The diagram labels it as the PCV Valve and Elbow Assembly, base part number 6B890.

What part number is the PCV hose in this diagram?

The hose connecting the PCV valve to the intake manifold fitting is labeled 6A664 (highlighted in red in the scan).

Where does the PCV hose connect on the intake manifold?

It connects to the Intake Manifold Fitting Assembly (part number 9A474) at the rear of the upper intake manifold plenum.

Where is the PCV valve located on this engine?

The PCV valve and elbow assembly plugs into the top rear of the valve cover, with the hose running up to the intake manifold fitting.

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Ford 5.0L V8 PCV Valve & Hose Routing Diagram - 9A474, 6B890, 6A664

Engine PCV routing parts diagram showing PCV valve, elbow, hose, and intake manifold fitting

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Parts/routing diagram showing the PCV valve and elbow assembly, hose, and intake manifold fitting on the engine.

AI caption October 2016 · Photo 1778 of 1799

This document is an exploded-view line drawing of a Ford V8 engine (shown from the front-left three-quarter perspective with the upper intake manifold plenum visible) illustrating the routing and components of the PCV (Positive Crankcase Ventilation) system. Three callouts identify the key parts: the Intake Manifold Fitting Assembly (Ford base part number 9A474) at the rear of the upper intake plenum, the PCV Valve and Elbow Assembly (base part number 6B890) which mounts into the valve cover grommet, and the connecting Hose (base part number 6A664) that runs between the PCV valve and the intake manifold fitting. In this scan, the PCV hose is highlighted in red and the intake fitting and valve/elbow are highlighted in blue to make the routing easy to follow against the black-and-white engine artwork. The drawing was uploaded as "5.0L PCV Hoses.jpg" to a 1990 Ford Bronco gallery alongside related 1990 emissions diagrams. A reader can learn where the PCV valve sits on the valve cover, where the hose attaches at the intake manifold, and the Ford base part numbers needed to source replacement PCV components.

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Frequently asked questions

What is the Ford part number for the PCV valve and elbow assembly?: The diagram labels it as the PCV Valve and Elbow Assembly, base part number 6B890.
What part number is the PCV hose in this diagram?: The hose connecting the PCV valve to the intake manifold fitting is labeled 6A664 (highlighted in red in the scan).
Where does the PCV hose connect on the intake manifold?: It connects to the Intake Manifold Fitting Assembly (part number 9A474) at the rear of the upper intake manifold plenum.
Where is the PCV valve located on this engine?: The PCV valve and elbow assembly plugs into the top rear of the valve cover, with the hose running up to the intake manifold fitting.