What happens if it sticks open?

It creates a vacuum leak, causing a rough or unstable idle and often triggering a check engine light.

Is it dangerous to drive with a faulty PCV valve?

Not immediately, but it can cause oil leaks or drivability issues over time — replace when symptoms appear, it’s an inexpensive part.

How often should the PCV valve be replaced?

There’s no strict interval, but many manufacturers suggest checking it every 50,000–100,000 km as part of routine maintenance.

What is the condition of Crankcase ventilation valve MERCEDES BENZ ML280 2008 OBSIDIAN BLACK?

Listed condition: Used. Current availability: 1 in stock - ready to ship. Review the item photographs and any stated defects as well.

Crankcase ventilation valve MERCEDES BENZ ML280 2008 OBSIDIAN BLACK

Name: Crankcase ventilation valve MERCEDES BENZ ML280 2008 OBSIDIAN BLACK
Brand: MERCEDES
SKU: A6420102091
Price: 13.50 EUR
Availability: InStock

OEM: A6420102091

Disassembled car photo

Engine running

Tested before shipping
Guaranteed quality
Fast delivery 3–7 days
14-day returns

Details for this exact part

Code: A6420102091
OEM: A6420102091
Condition: Used
Availability: 1 in stock - ready to ship
Make, model: MERCEDES ML W164 2005-2011
Year: 2008
Engine: Desiel 3.0 140 kW 642.940 A6420108820
VIN: WDC1641201A401610

What is this part and why does it matter?

The crankcase ventilation valve (PCV valve) regulates the flow of crankcase gases into the intake system, relieving pressure while preventing intake backfire from reaching the crankcase.

Have a question about this product?

Message us on WhatsApp!

Working hours: Mon–Fri 9:00–18:00

WhatsAppAsk about this product

Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

Rough or unstable idle
Whistling noise from under the bonnet
Increased oil consumption or oil in the intake

Installation information

Push-fits or screws into the valve cover or intake manifold — simple to replace with basic tools in most cases.

Frequently asked questions

Crankcase pressure builds up, which can push oil past seals and gaskets, causing leaks at multiple points around the engine.

Donor vehicle description

VIN: WDC1641201A401610
Make, model: Mercedes Benz ML280
Year: 2008
Engine: Desiel 3.0 140 kW 642.940 A6420108820
Transmission: 7-speed Automatic 7G-TRONIC
Drive: Full
Equipment: LHD
Colour: OBSIDIAN BLACK 197U

358 parts from this car

What our customers say

All reviews →

Price: excellent.
D
Didier V.
August 2026
Super good! They came through with the part I needed, quickly and at a fair price! Thanks, and I definitely recommend!
I
Ilmars K.
August 2026
I ordered a Heater Blower Motor Resistor for a Toyota Avensis. Delivery took eight days from Latvia to Ireland. I installed it, and everything works perfectly. I wish this company success.
A
Aleksandr L.
Toyota Avensis
August 2026
No complaints about Evro Trans itself, everything's fine. But the delivery..... It felt like the order was being carried by turtles. 4 days from Riga to Daugavpils. Judging by the tracking, the parcel just sat somewhere behind a shed for 3 days, then they found it and delivered it the next day. I think that's why I won't be ordering there again.
P
Paul F.
June 2026
Super fast delivery of the part, and good quality of the used part. Thanks for the service.
N
Natālija I.
May 2026
I ordered antifreeze heaters and an auxiliary pump. Everything arrived quickly, the very next day, and matched the description. I'm satisfied.
J
Juris J.
February 2026
Excellent service, timely delivery, and complete transparency at every step. I highly recommend EvroTrans to anyone looking for a reliable partner!
E
Egor S.
November 2025
Bought a front fender for my car. I liked it! After payment they sent more than 20 photos of the problem areas, and it was packed very securely - took a while to unwrap.
I
Igors K.
Front fender
October 2025