Description
Cylinder Head Cover, Valve Cover, Intake Manifold
2.0 HDi RHR Citroën Peugeot
This used replacement part is a direct-fit cover for the top of the cylinder head and the intake manifold area on vehicles with the 2.0 HDi RHR engine. Supplied with OEM references 9645977980, 9669688980 and internal code 0248Q6, it is aimed at professional workshops and experienced DIY mechanics who need a reliable spare part that restores proper sealing and serviceability of the valve train and intake assembly.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: 2.0 HDi RHR
- Product Codes: 9645977980, 9669688980, 0248Q6
- Other Numbers: 0248Q6 | 9645977980 | 9669688980
Fitment
Designed for vehicles equipped with the 2.0 HDi RHR diesel engine (Citroën and Peugeot). This part is intended as a direct replacement where the above OEM references match the vehicle’s fitted part. Ideal for mechanics and experienced DIYers replacing a leaking or damaged valve/cover component.
Function
The valve/cylinder head cover seals the top of the engine, protecting the camshaft, rocker arms and timing components from contaminants while retaining engine oil. When integrated with the intake manifold cover area, it also supports ventilation and PCV connections that route crankcase gases back into the intake. Proper sealing prevents oil leaks, reduces contamination of the intake tract, and ensures correct engine ventilation performance.
Common Failure Causes
- Gasket Degradation: Rubber or cork gaskets harden and shrink with heat and age, causing oil seepage around the cover.
- Cracks Or Damage: Impact, overtightening of fasteners or thermal stress can crack plastic or metal covers, leading to leaks and loss of vacuum/ventilation integrity.
- Broken Mounting Points: Plastic mounting ears are vulnerable to snapping when removing/installing the cover without care.
- Clogged PCV/Drain Paths: Restricted ventilation channels increase internal pressure and accelerate gasket failure.
Installation Recommendation
- Replace The Gasket: Always install a new gasket/seal when fitting the cover. Reuse of old seals commonly results in immediate or short-term leakage.
- Clean Mating Surfaces: Remove old gasket material and oil residues; ensure the mating surfaces are flat, clean and dry before assembly.
- Torque Fasteners To Spec: Tighten bolts to the manufacturer’s torque sequence and values to avoid warping the cover or damaging threads. Replace any damaged or stretched bolts.
- Inspect PCV And Hoses: Replace or clean associated PCV valves and hoses; verify ventilation passages are clear to prevent recurrence of failure.
- Check For Associated Damage: Inspect camshaft seals, valve cover bolts, and nearby sensors/connectors during the job; repair as necessary.
- Test After Installation: Start the engine and check for oil leaks and abnormal noises. Re-check torque after a short test drive if required by the manufacturer.
Why This Part Is Often Replaced
Valve covers and intake-cover assemblies are service items that commonly develop external oil leaks due to gasket aging, thermal cycling and contamination. Leaks can lead to oil on ignition components, smoke, or oil entering the intake. Damage to mounting tabs during previous maintenance also makes replacement necessary. Replacing the cover and associated seals restores proper sealing, reduces oil consumption and prevents secondary damage to ignition and intake components.
