Oil Separator PCV Diaphragm for Ford / Volvo - 1511222

This 58.3 mm diaphragm is part of the oil separator and crankcase ventilation system on the Ford and Volvo applications listed below. A worn diaphragm can affect crankcase pressure and allow unmetered air into the system, with increased oil consumption or unstable engine operation.

Vehicle Applications

• Volvo C30, C70, S40, S60, V50, V60, V70, XC60, XC70 and XC90.
• Ford Kuga, Mondeo, S-Max and FOCUS II ST - 2.5/2.5T.

Check the Housing Reference

For Volvo, the diaphragm is listed for oil filter housing references 30684381, 31338698 and 8642424. The Ford oil separator reference is 1511222. Compare the reference and diaphragm dimensions with the installed component before ordering.

When to Inspect the Diaphragm

• Whistling or excessive crankcase vacuum.
• Unstable engine idle.
• Increased oil consumption.
• Oil deposits in the intake.
• Exhaust smoke after the engine has warmed up.
• Mixture faults associated with unmetered air.

These symptoms are reasons to inspect the crankcase ventilation system; they do not by themselves confirm a diaphragm fault.

Reference Numbers

• Ford oil separator: 1511222.
• Volvo oil filter housing: 30684381, 31338698, 8642424.
• Additional reference supplied for part selection: 118107F400.

SKU: KL1511222.

Volvo Engine Applications

• Diesel: D5244T / D5244Tx (2.4 D / 2.4 D5).
• Petrol: B5244S / B5254T (2.4 / 2.5T / T5).

Repair Scope

The diaphragm can be replaced separately without replacing the complete assembly when the housing is serviceable. Replacing a worn diaphragm can help correct crankcase ventilation faults and associated oil consumption when the engine is otherwise in good condition. Inspect the oil separator or valve cover housing, ventilation hoses and any visible cracks before replacement. A damaged housing may require more than a diaphragm replacement.

Important Before Ordering

Compare the OEM/P/N or marking on the installed component with the references listed here. Check the diaphragm diameter of 58.3 mm and the physical design before ordering.

FAQ

What is the diaphragm diameter?

The diaphragm diameter is 58.3 mm.

Which Ford applications are listed?

Ford Kuga, Mondeo, S-Max and FOCUS II ST with 2.5/2.5T applications are listed for oil separator reference 1511222.

Which Volvo housing numbers should I compare?

Compare the installed housing reference with 30684381, 31338698 and 8642424, as well as the diaphragm dimensions and design.

Does whistling mean the diaphragm must be replaced?

Whistling and excessive crankcase vacuum are reasons to inspect the membrane and crankcase ventilation system. Confirm the condition of the diaphragm, housing and ventilation hoses before replacement.

Does the entire oil separator need to be replaced?

Not necessarily. The diaphragm can be replaced separately if the housing remains serviceable. Cracks or other housing damage may require replacement of the assembly.

Part Number / PN

1511222, 30684381, 31338698, 8642424, 118107F400

• Ford
• Volvo

Returns and exchanges

Request a change-of-mind return within 14 calendar days of delivery, then send the goods within 14 calendar days of notifying us. Our voluntary return option applies to unused, uninstalled, complete goods in their original condition and packaging. Exchanges are subject to availability and agreement.

The customer pays change-of-mind return shipping. No restocking fee applies. Refunds and original delivery charges are handled under our Refund & Return Policy and applicable law.

Faulty, damaged or incorrect goods

Email contact-us@klifex.net with your order details and a description of the problem. These claims are separate from change-of-mind returns. Where we are responsible, we bear the required remedy and return costs. Installation alone does not remove mandatory defect rights.

Your legal rights

Applicable statutory rights take precedence, including EU/EEA and UK withdrawal rights and legal guarantees. Necessary inspection does not remove a statutory withdrawal right; deductions for excessive handling must reflect an actual, evidenced loss of value.

Contact us for the correct return address before shipping. Our legal address is not a return address.

Read the full Refund & Return Policy