Intake Manifold Control Plate – Opel Z14XEP / Z12XEP Twinport | OEM 5850676 24420528
The Opel Z14XEP and Z12XEP Twinport system uses a control plate to actuate the variable intake flaps. When this plate wears, cracks, or breaks, the Twinport system stops switching correctly — causing rough idle, reduced low-end torque, and intake-related fault codes. This replacement control plate restores correct Twinport operation.
Fits OEM #5850676.
When to Inspect This Part
- loss of power or hesitation
- smoke after warm-up
- rough or unstable idle
- mixture faults or an intake air leak
What's Included
- 1 × Intake Manifold Control Plate
OEM Part Numbers and Vehicle Fitment
Additional confirmed fitment
- Opel 5850676, 55557907, 5850543, 55562260, 850079, 55584976, 850759
- OPEL AGILA-A (H00) - Z12XEP 2000 - 2008
- OPEL ASTRA-G + ZAFIRA-A (T98) - Z14XEP 1998 - 2010
- OPEL ASTRA-H (A04) - Z12XEP, Z14XEL, Z14XEP c 2004
- OPEL CORSA-C (X01) - Z12XEP, Z14XEP c 2001
- OPEL MERIVA-A (X03) - Z14XEP 2003 - 2010
- OPEL TIGRA-B (X04) - Z14XEP c 2004
Part Number / PN
5850676, 55557907, 5850543, 55562260, 850079, 55584976, 0280600072, 55559831, 0280600073, 55559838, 0280600070, 55556841, 0280600055, 55557906, 0280600063, 850759, 24420528, 55559829
Important Fitment Check
Before ordering, compare the part design, dimensions, connectors, and every available OEM/P/N marking with the part installed on the vehicle. Matching OEM/P/N 5850676 is the primary fitment check.
FAQ
How do I confirm fitment for this Intake Manifold Control Plate?
Compare the exact OEM/P/N and physical design with the installed part. The primary reference is 5850676. Do not select the part by vehicle model alone.
What symptoms may indicate a problem with this Intake Manifold Control Plate?
Confirmed symptoms include loss of power or hesitation, smoke after warm-up, rough or unstable idle, mixture faults or an intake air leak. Diagnose the original assembly before ordering so another fault is not mistaken for this part.
What is included with this Intake Manifold Control Plate?
The confirmed kit contents are: 1 × Intake Manifold Control Plate.
Does this listing include the complete surrounding assembly?
No. It includes only the item or repair components identified for this SKU. Inspect related parts separately and replace them only when diagnosis confirms a fault.
What should be checked before installation?
Check the OEM/P/N, dimensions, connectors, orientation, and condition of the mating components. Installation should follow the correct service procedure for the specific vehicle and assembly.
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