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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
- 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.
What does reference 55486867 fit?
According to the product listing, this 56mm PCV diaphragm repair kit is intended for compatible Opel and Vauxhall 1.6 / 2.0 CDTI applications, including listed Astra J/K, Insignia B, Mokka/Mokka X and Zafira C vehicles.
Are 55570077 and 55486868 related to 55486867?
Yes. The product page lists 55486867, 55486868, 55495825, 55570077 and 55578300 together as compatible part numbers for this repair kit.
Is EK 50001226 an OEM number?
The product title includes EK 50001226, but the page does not identify it as an OEM number or include it in the Compatible Part Numbers list.
What symptoms can indicate PCV diaphragm failure?
The product listing identifies rough idle, engine whistling, increased oil consumption and crankcase fault codes as symptoms associated with a failed 56mm PCV diaphragm.
Is this a complete valve cover assembly?
No. This product is a 56mm PCV diaphragm repair kit for the crankcase ventilation assembly. It is not a complete valve cover.
How do I confirm compatibility before ordering?
Match your existing component to one of the listed compatible references, confirm the B16DTH, B16DTL or B20DTH engine code, and verify that the required diaphragm diameter is 56mm.
Read All
Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings