• Ford HL3Z-6A664-A (Motorcraft KCV-294) PCV Valve
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Ford

Ford HL3Z-6A664-A (Motorcraft KCV-294) PCV Valve

Ford HL3Z-6A664-A (Motorcraft KCV-294) PCV Valve

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✔ Ford HL3Z-6A664-A (Motorcraft KCV-294) PCV Valve Hose Assembly — Genuine OEM Part
✔ Fitment: 2017–2025 Ford F-150, Expedition; 2017–2026 Lincoln Navigator (3.5L EcoBoost, PowerBoost, and 3.5L V6 engines) 
✔ Direct replacement for factory PCV hose — no modifications required
✔ Manufactured to Ford’s original specifications — includes standard rubber construction for durability
✔ Compatible with both standard EcoBoost and hybrid PowerBoost variants 
✔ Genuine OEM / Motorcraft quality — backed by Ford Motor Company warranty

 

Ford 3.5L EcoBoost PCV Valve Hose — HL3Z-6A664-A / KCV-294

A check engine light with code P04DB (Crankcase Vent System Disconnected), rough idle, oil consumption, or a visible crack in the hose connecting the PCV valve to the intake manifold — these are common signs that your PCV valve hose may need replacement. The hose directs crankcase gases back into the intake system; a split or hardened hose can cause vacuum leaks and affect engine performance .

This is a factory-original Ford PCV hose (part number HL3Z-6A664-A), also sold under the Motorcraft brand as KCV-294 . It is designed to fit the 3.5L EcoBoost engine family in the models listed above. Replacing it with this genuine Ford part ensures a proper seal and reliable crankcase ventilation.

 

When to Replace

• Check engine light with codes P04DB or related crankcase ventilation codes• Audible hissing or vacuum leak noises from the engine bay• Visible cracks, brittleness, or splitting in the hose
• Excessive oil consumption or rough idle

Product Details & Highlights

• ✔ Genuine Ford / Motorcraft part — not an aftermarket replica
• ✔ Direct replacement — fits factory PCV valve and intake manifold
• ✔ Standard rubber construction — designed for engine bay conditions
• ✔ Two-year Motorcraft warranty — supported by Ford and Lincoln dealers 

Package Contents

• 1 × Ford HL3Z-6A664-A / Motorcraft KCV-294 PCV hose

FAQ

FAQ

Is this hose compatible with the 3.5L PowerBoost hybrid engine?
Yes — this hose fits both standard 3.5L EcoBoost and 3.5L PowerBoost hybrid variants on the F-150 from 2021 onwards .

What is the difference between this part (HL3Z) and JL3Z-6A664-A?
The HL3Z-6A664-A is designed for the 3.5L EcoBoost engine family (F-150, Expedition, Navigator). The JL3Z-6A664-A is used on the 3.5L naturally aspirated engine in Transit and the 3.3L V6 engine.

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