Peugeot 208 308 3008 Citroën C3 C4 Opel Mokka 1.2 PureTech THP - PCV Valve Cover with Diaphragm 9811687980

The weak spot of the 1.2 PureTech and THP that everyone eventually runs into

On the three-cylinder 1.2 engines of the PSA / Stellantis group, crankcase ventilation is a well-known source of failure for owners. The diaphragm housed in the valve cover ages, hardens or tears. The result: whistling, an idle that starts to hunt, and rising oil consumption. This PCV valve cover with diaphragm is the simplest and cleanest answer.

What you receive

• 1 PCV valve cover fitted with its diaphragm
• Equivalent of original part number 9811687980
• Rubber and plastic
• Engines: 1.2 PureTech / THP (codes EB2ADT, HNP, HN05)

Why replace the whole assembly rather than the diaphragm alone?

A new diaphragm in a worn cover means redoing the job later. By replacing the complete cover, you start from a sound base and save time during installation.

Symptoms that should raise a red flag

• A whistle that appears when hot or at idle
• Rough idle, hesitation, sometimes stalling
• Oil level dropping faster than before
• An engine warning light, depending on the ECU
• Oil seepage from the upper engine gaskets

These symptoms don't always come from the PCV, but it is one of the quickest and least expensive checks. While you are in there, take the opportunity to check the condition of the breather hoses and the oil level.

Compatibility: models concerned with 1.2 PureTech / THP

• Peugeot: 208, 2008, 308 and 308 SW, 408, 508 SW, 3008, 5008, Rifter, Partner
• Citroën: Berlingo, C3, C3 Aircross, C4 Cactus, C4, C4 X, C5 Aircross, C5 X, Grand C4 SpaceTourer
• DS: DS 3 and DS 3 Crossback, DS 4, DS 7
• Opel: Corsa F, Mokka, Crossland, Grandland, Combo

One last check before ordering: compatibility varies by engine output and model year of your vehicle. Compare the number stamped on your cover with part number 9811687980; it must match. If in doubt, write to us with your VIN and we will check before shipping.