A2700180000 PCV Oil Separator Repair Kit 56mm for Mercedes M274 / M270
This 56mm PCV oil separator repair kit is designed for Mercedes-Benz applications with M274 2.0L turbo and M270 1.6L turbo engines. The primary fitment reference confirmed on the product page is A2700180000.
This product is a PCV oil separator repair kit for the existing assembly. The product description states that the repair replaces the internal membrane and seals. It does not include the complete surrounding valve cover or oil separator assembly.
OEM / Reference Numbers
- A2700180000 — primary OEM / fitment reference
- A2740180521 — related part number
- A2740901729 — related part number
- A2740900200 — related part number
- A2740905200 — related part number
- A2700900829 — related part number
- A2700901529 — related part number
- A2700900700 — related part number
- A2740905600 — related part number
- A2740901600 — related part number
- A2740181400 — related part number
- A2700181400 — related part number
Part Type
- PCV oil separator repair kit
- Crankcase ventilation repair kit
- 56mm internal membrane repair
- Membrane and seal repair for the existing assembly
- Not a complete oil separator or valve cover assembly
What This Kit Does
The PCV oil separator system regulates crankcase ventilation and separates oil from crankcase gases. A failed internal membrane can cause incorrect crankcase vacuum, oil consumption, oil residue in the intake and drivability faults. This repair kit is intended to restore the internal membrane and sealing function of the compatible assembly.
Compatible Vehicles
- Mercedes-Benz C-Class W205 — C200 / C250 applications with M274 2.0T
- Mercedes-Benz E-Class W213 — E200 / E250 applications with M274 2.0T
- Mercedes-Benz GLC X253 — 200 / 250 applications
- Mercedes-Benz GLA X156 — 200 / 250 applications
- Mercedes-Benz A-Class W176 — compatible M270 application
- Mercedes-Benz B-Class W246 — compatible M270 application
Additional Confirmed Fitment
- Mercedes-Benz CLS-Class C218 / X218
- Mercedes-Benz E-Class W212 / V212
- Mercedes-Benz E-Class C207 / A207
- Mercedes-Benz E-Class S212
- Mercedes-Benz GLK-Class X204
- Mercedes-Benz C-Class W205 / V205 / S205 / C205
- Mercedes-Benz GLC Coupe C253
- Mercedes-Benz GLC-Class X253
- Mercedes-Benz E-Class W213 / V213
- Mercedes-Benz E-Class S213 / X213
- Mercedes-Benz E-Class Coupe C238
Engine / Technical Details
- Vehicle brand: Mercedes-Benz
- Engine family: M274
- Engine context: 2.0L turbo
- Engine family: M270
- Engine context: 1.6L turbo
- Membrane diameter: 56mm
- Primary fitment reference: A2700180000
- Repair scope: internal PCV membrane and seals
Common Symptoms of PCV Membrane Failure
- Whistling or excessive crankcase vacuum
- Rough or unstable idle
- Increased oil consumption
- Oil residue or oil mist in the intake
- Smoke after warm-up
- Mixture faults or an intake air leak
- Crankcase fault codes
Why Choose This Repair Kit
- Designed for Mercedes M274 2.0T and M270 1.6T applications
- Uses A2700180000 as the primary fitment reference
- Repairs the internal PCV membrane and sealing components
- Allows repair of the existing oil separator system without presenting the product as a complete surrounding assembly
Important Before Ordering
- Use A2700180000 as the primary OEM / P/N fitment check.
- Confirm that the required membrane size is 56mm.
- Compare the physical design, dimensions, connectors and all available OEM / P/N markings with the installed part.
- Confirm the M274 2.0T or M270 1.6T engine application where applicable.
- Check that the valve cover or oil-separator housing and connected breather hoses are serviceable.
- Cracked housings or blocked breather hoses require separate correction.
- This product is a PCV oil separator repair kit and not a complete valve cover or oil separator assembly.
- The product page does not provide an individual quantity list for every seal in the kit.
What does reference A2700180000 fit?
A2700180000 is the primary fitment reference for this 56mm PCV oil separator repair kit. The product page confirms Mercedes applications with M274 2.0T and M270 1.6T engines, including listed C-Class, E-Class, GLC, GLA, A-Class and B-Class applications.
Are A2740901729 and A2740180521 related to A2700180000?
Yes. The product page lists A2740901729, A2740180521 and several additional numbers in the Part Number section together with primary reference A2700180000.
What size is the PCV membrane?
The confirmed membrane size is 56mm.
What symptoms can indicate PCV membrane failure?
Confirmed symptoms include whistling or excessive crankcase vacuum, rough or unstable idle, increased oil consumption, oil residue in the intake, smoke after warm-up, mixture or intake-air-leak faults and crankcase fault codes.
Is this a complete Mercedes oil separator assembly?
No. This is a repair kit for the internal PCV membrane and seals. The complete surrounding valve cover or oil separator assembly is not included.
How do I confirm compatibility before ordering?
Match OEM / P/N A2700180000, verify the 56mm membrane size, confirm the applicable M274 or M270 engine, and compare the physical design and dimensions with the installed assembly.
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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