PCV Crankcase Ventilation Repair Kit – Opel / Vauxhall 1.6 / 2.0 CDTI | 56mm Diaphragm | EK 50001226

55486867 / 55570077 PCV Crankcase Ventilation Repair Kit 56mm for Opel / Vauxhall

This PCV crankcase ventilation repair kit is designed for Opel and Vauxhall 1.6 and 2.0 CDTI diesel engines using compatible crankcase ventilation components referenced as 55486867, 55486868, 55495825, 55570077 or 55578300.

This product is a 56mm PCV diaphragm repair kit. It replaces the failed diaphragm in the crankcase ventilation assembly and is not a complete valve cover or complete crankcase ventilation assembly.

OEM / Reference Numbers

• 55486867 — primary compatible reference
• 55570077 — primary compatible reference
• 55486868 — related compatible reference
• 55495825 — related compatible reference
• 55578300 — related compatible reference
• 55571586 — related compatible reference
• EK 50001226 — product-title reference; not identified on the page as an OEM number

Part Type

• PCV crankcase ventilation repair kit
• PCV diaphragm repair kit
• 56mm replacement diaphragm
• Not a complete valve cover assembly
• Not a complete crankcase ventilation assembly

What This Kit Does

The PCV diaphragm is part of the crankcase ventilation system. According to the product listing, failure of the 56mm diaphragm can cause rough idle, engine whistling, increased oil consumption and crankcase fault codes. Replacing the failed diaphragm is intended to restore correct PCV function.

Compatible Vehicles

• Opel / Vauxhall Astra J / K — B20DTH, B16DTH
• Opel / Vauxhall Insignia B — B20DTH
• Opel / Vauxhall Mokka / Mokka X — B16DTL
• Opel / Vauxhall Zafira C — B20DTH

Engine / Technical Details

• Engine context: 1.6 CDTI and 2.0 CDTI diesel
• Confirmed engine code: B16DTH
• Confirmed engine code: B16DTL
• Confirmed engine code: B20DTH
• PCV diaphragm diameter: 56mm
• Compatible references: 55486867, 55486868, 55495825, 55570077, 55578300

Common Symptoms of PCV Diaphragm Failure

• Rough idle
• Engine whistle
• Increased oil consumption
• Crankcase fault codes

Why Choose This Repair Kit

• Allows replacement of the failed 56mm PCV diaphragm without replacing the complete crankcase ventilation assembly
• Designed for confirmed Opel and Vauxhall 1.6 / 2.0 CDTI applications
• Supports multiple compatible part numbers listed on the product page
• Targets PCV problems associated with diaphragm failure

Important Before Ordering

• Verify that your existing component matches 55486867, 55486868, 55495825, 55570077 or 55578300.
• Confirm that your engine code is B16DTH, B16DTL or B20DTH.
• Verify that the required PCV diaphragm diameter is 56mm.
• Do not use EK 50001226 as the only compatibility check because the page does not identify it as an OEM or compatible part number.
• This product is a PCV diaphragm repair kit and not a complete valve cover or crankcase ventilation assembly.

• OPEL
• Vauxhall

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