Mercedes-Benz ML450 Positive Crankcase Ventilation (PCV) Valve Replacement at your home or office.

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Positive Crankcase Ventilation (PCV) Valve Replacement Service

How much does a Positive Crankcase Ventilation (PCV) Valve Replacement cost?

On average, the cost for a Mercedes-Benz ML450 Positive Crankcase Ventilation (PCV) Valve Replacement is $136 with $41 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2011 Mercedes-Benz ML450V6-3.5L HybridService typePositive Crankcase Ventilation (PCV) Valve ReplacementEstimate$197.51Shop/Dealer Price$235.64 - $310.66
2010 Mercedes-Benz ML450V6-3.5L HybridService typePositive Crankcase Ventilation (PCV) Valve ReplacementEstimate$177.51Shop/Dealer Price$215.67 - $290.71
Show example Mercedes-Benz ML450 Positive Crankcase Ventilation (PCV) Valve Replacement prices

What is the Positive Crankcase Ventilation (PCV) Valve all about?

The PCV Valve transfers gasses from inside the crankcase to the intake manifold where they are burned as part of the normal combustion process. Excess fumes are burned by the engine, rather than released into the atmosphere.

Keep in mind:

PCV valve failure can be caused by other engine problems. To ensure that this is not the case, a mechanic should test your engine after replacing the PCV valve, to make sure that the car runs well and doesn’t have other issues.

How it's done:

  • Disconnect the vacuum hose.
  • Remove and replace the PCV valve.
  • Replace PCV hose if appropriate.
  • Install vacuum hose.

Our recommendation:

In general, it is a good practice to replace the PCV valve during every major tune-up. Changing the engine oil and flushing the engine on a regular basis will prevent sludge build-up inside the oil pan that may cause the PCV valve to fail.

What common symptoms indicate you may need to replace the Positive Crankcase Ventilation (PCV) Valve?

  • Leaks in the engine compartment.
  • Leaks underneath the car.
  • A hissing noise from the engine.
  • Car runs poorly.

How important is this service?

As excess gas accumulates in your crankcase, the PCV valve redirects it through the intake manifold, where they are used as a normal part of your engine’s process. When the PCV valve fails, your engine won’t redirect this excess gas that it depends on. As such your vehicle will not run smoothly, and it will likely get much worse gas mileage.

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Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(9)

Rating Summary
7
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7
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Attila

19 years of experience
920 reviews
Attila
19 years of experience
Mercedes-Benz E320 V6-3.0L Turbo Diesel - Positive Crankcase Ventilation (PCV) Valve - East Orange, New Jersey
Attila arrived on time and completed the work in a most timely manner. He was professional, courteous and very knowledgeable. If I need service again, I would like to have him perform any that are needed. Thanks!

Josh

10 years of experience
3 reviews
Josh
10 years of experience
Mercedes-Benz GLK350 V6-3.5L - Positive Crankcase Ventilation (PCV) Valve - Peoria, Arizona
Very professional

William

33 years of experience
69 reviews
William
33 years of experience
Mercedes-Benz C300 V6-3.0L - Positive Crankcase Ventilation (PCV) Valve - Perris, California
Fast efficient service

Juan

9 years of experience
313 reviews
Juan
9 years of experience
Mercedes-Benz C300 V6-3.0L - Positive Crankcase Ventilation (PCV) Valve - Oviedo, Florida
After seeing 3 other mechanics, to find the source of a whistling noise, and oil dipstick popping out -spewing oil all over my engine 2x! Juan expertly diagnosed the engine like a surgeon! He discovered quickly that I had a clogged PCV valve, which caused the engine to struggle. Juan was expert at replacing this part, and even took the time to show me that part that was clogged by trying to blow air through it. Now that the engine is repaired, my old car feels NEW AGAIN! Thank you so much Juan- you brilliant!!!

Excellent Rating

(9)

Rating Summary
7
1
0
0
1
7
1
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1
Number of Mercedes-Benz Positive Crankcase Ventilation (PCV) Valve Replacement services completed
99+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
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