BMW 325i Vent Oil Separator Replacement at your home or office.

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Vent Oil Separator Replacement Service

How much does a Vent Oil Separator Replacement cost?

On average, the cost for a BMW 325i Vent Oil Separator Replacement is $316 with $107 for parts and $209 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2004 BMW 325iL6-2.5LService typeVent Oil Separator ReplacementEstimate$501.94Shop/Dealer Price$599.31 - $792.97
2001 BMW 325iL6-2.5LService typeVent Oil Separator ReplacementEstimate$423.44Shop/Dealer Price$515.63 - $705.40
2002 BMW 325iL6-2.5LService typeVent Oil Separator ReplacementEstimate$594.42Shop/Dealer Price$718.16 - $931.60
Show example BMW 325i Vent Oil Separator Replacement prices

What is the Vent Oil Seperator all about?

An internal combustion engine runs on a series of controlled explosions. During this process, gases are created. While most of those gases will eventually make their way from the combustion chamber through the exhaust manifold and out the muffler, some pass the pistons into the crankcase. The latter is called “blow-by”, and it can be very damaging to an engine. It creates additional pressure within the crankcase that damages seals and gaskets. To combat this deleterious effect, a ventilation system is used.

These systems require several different components in order to operate, including the positive crankcase ventilation (PCV) valve and the vent oil separator hose. The vent oil separator hose is responsible for capturing and collecting oil droplets that invariably accompany those spent gases and ensuring they are not released into the combustion chamber. The gases are then re-burned for emissions control. If your vent oil separator is plugged, excess pressure can build up inside the crankcase and blow out a seal, causing an oil leak. Excess oil in the vent oil separator can also enter the combustion chamber, causing a misfire and rough run with blue, oily exhaust.

Keep in mind:

  • The vent oil separator hose is susceptible to clogging, particularly during cold weather.
  • The vent oil separator hose is part of the crankcase ventilation system. If you’re experiencing related problems, have the entire system diagnosed.

How it's done:

  • The faulty vent oil separator is located and identified
  • The intake is removed and the vent oil separator is removed
  • The new vent oil separator is installed and the intake is installed
  • The engine is started and idled, then the new vent oil separator is checked for leaks
  • The vehicle is road tested and checked for proper operation

Our recommendation:

The vent oil separator doesn’t have a set maintenance schedule. If you are having symptoms related to the vent oil separator, have one of our expert mechanics diagnose the crankcase ventilation system on your vehicle and repair it as necessary.

What common symptoms indicate you may need to replace the Vent Oil Seperator?

  • Oil is present in the PCV valve
  • Blue smoke from the exhaust
  • Engine runs rough with a check engine light on

How important is this service?

The crankcase ventilation system is a vital part of your emissions control system and can adversely affect engine operation if it is not maintained properly.

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Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(416)

Rating Summary
397
11
4
2
2
397
11
4
2
2

Alejandro

10 years of experience
21 reviews
Alejandro
10 years of experience
325i 2004 - Oil/Fluid Leak - Los Angeles, CA
Excellent mechanic

Alejandro

10 years of experience
21 reviews
Alejandro
10 years of experience
325i 2004 - Smog Check Service - Los Angeles, CA
Excellent mechanic

Christopher

20 years of experience
29 reviews
Christopher
20 years of experience
325i 2006 - Starter - Alpharetta, GA
Chris came out and replaced a starter on a BMW. He was very professional and explained all the work that needed to be done. Definitely would recommend.

Daniel

8 years of experience
37 reviews
Daniel
8 years of experience
325i 2002 - Air Filter - Henderson, NV
Very helpful, and worked fast! Answered questions, and gave explanations.

Excellent Rating

(416)

Rating Summary
397
11
4
2
2
397
11
4
2
2
Number of BMW 325i services completed
4576+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

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