BMW 525i Catalytic Converter Replacement at your home or office.

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Catalytic Converter Replacement Service

How much does a Catalytic Converter Replacement cost?

On average, the cost for a BMW 525i Catalytic Converter Replacement is $643 with $538 for parts and $104 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1989 BMW 525iL6-2.5LService typeCatalytic Converter ReplacementEstimate$1203.29Shop/Dealer Price$1491.74 - $2313.78
Show example BMW 525i Catalytic Converter Replacement prices

What is the Catalytic Converter all about?

The catalytic converter is an emissions related component that is mounted in the exhaust pipe. Its purpose is to superheat unburned particles in the exhaust gases that are expelled from the engine. As the engine runs, the catalytic converter warms up to an operating temperature of 500-1200 °F. At this temperature the particles in the ‘dirty’ exhaust are burned and converted into water vapor and carbon dioxide. The catalyst inside is nearly always comprised of precious metals such as platinum, rhodium, or palladium. When the catalyst isn’t able to burn off the unburned hydrocarbons in the exhaust, an unpleasant odor can occur, a rough run or misfire may be felt, or the Check Engine light may illuminate.

Keep in mind:

  • Most cars will require the aftermarket Catalytic Converter to be welded to the exhaust pipes. Mobile mechanics can only do this service if you have a direct fit catalytic converter bought from a dealer.
  • When replacing the catalytic converter, it may be necessary to replace oxygen sensors as well.
  • Catalytic converter symptoms are often similar to other more straightforward issues. Get the Check Engine light diagnosed anytime it illuminates.

How it's done:

  • The vehicle is raised and supported on jack stands
  • The defective catalytic converter is removed
  • The new catalytic converter is installed and the vehicle is started to check for any leaks
  • The vehicle is lowered off the jack stands
  • The vehicle is road tested for proper operation

Our recommendation:

If you are consistently taking short trips with your vehicle, the catalytic converter may not be getting hot enough to completely burn away the hydrocarbons. To prevent the catalytic converter from getting clogged, take your vehicle for the occasional drive on the highway for 15 minutes. This allows the exhaust to sufficiently heat up and burn off any deposits in the catalytic converter.

What common symptoms indicate you may need to replace the Catalytic Converter?

  • Check engine light is on or flashing
  • Car has little or no power
  • Smell of rotten eggs inside the car or out of the exhaust
  • Poor fuel economy
  • Backfiring and rough running

How important is this service?

If the catalytic converter isn’t operating efficiently, the check engine light will come on and your engine can begin to lose performance. If the catalytic converter becomes plugged, the engine light will begin to flash and your engine may stall or no longer start. In extreme cases where the converter is plugged, the excess back pressure created can actually cause internal engine damage. If you are experiencing symptoms related to catalytic converter failure, get it checked soon.

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Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(183)

Rating Summary
168
6
2
0
7
168
6
2
0
7

Harish

27 years of experience
588 reviews
Harish
27 years of experience
BMW 525i L6-3.0L - Thermostat - Charlotte, North Carolina
Harish was very professional, courteous, and knowledgable. Harish called an hour before my appointment to advise that he was on the way. I had my water pump and thermostat replaced on my 2006 BMW 525i. In total it took less than three hours to replace the parts. Harish left my grange as clean or cleaner than it was before he arrived. I will book Harish again for my future mechanical needs.

Manuel

32 years of experience
580 reviews
Manuel
32 years of experience
BMW 525i L6-2.5L - Oil Change - Irvine, California
This mechanic immediately made me feel like I was in good hands!

Albert

15 years of experience
46 reviews
Albert
15 years of experience
BMW 525i L6-3.0L - Car is overheating - Fontana, California
On time and very knowledgeable

David

16 years of experience
635 reviews
David
16 years of experience
BMW 525i L6-2.5L - Oil Change - Antioch, California
he knows a lot more than other machanics that works at my mechanics,From my experiences over the yearswith them very disappointing that because of some kind of company rule he was not able to work on my vehicle even though I spoke with him and was very sure he knew just how to do the proceedures i need done although his company (my mechanics) has rated him not experiaced enough and would not allow him to work the job even when i especially ask for hime by name and asked a supervisor to intervene(which was denied ) and get this !! I asked for another mechanic who could do the same work I was told they don't have anyone who is able to do this work! !Now this is just checking out some warning lights on the dash which he explained to me throughly and how to go about repairing them now the only conclusions I can come to after this' is possibly they are quite content to change my oil and filters but ask them to do something a little more complicated what are they afraid of? getting sued? obviously not willing go the extra mile

Excellent Rating

(183)

Rating Summary
168
6
2
0
7
168
6
2
0
7
Number of BMW 525i services completed
2013+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

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