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How many catalytic converters on this car?

Tiny
FLIPPA334
  • MEMBER
  • 2010 BUICK LA CROSSE
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 156,000 MILES
I want to know how many catalytic converters are on the car.
Friday, June 10th, 2022 AT 7:50 AM

5 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

This Buick should have two catalytic converters. One of each exhaust manifold.

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

https://www.2carpros.com/articles/catalytic-converter-replacement

I have attached diagrams below for your reference.

Let me know of any questions.
Thank you.
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Friday, June 10th, 2022 AT 9:11 AM
Tiny
FLIPPA334
  • MEMBER
  • 37 POSTS
So, could you tell me why car auto part stores are saying it's three. Two in the front and one in the back.
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Friday, June 10th, 2022 AT 10:36 AM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
There is a secondary catalytic component that is part of the center exhaust pipe. Most issues happen with the two primary units.
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Friday, June 10th, 2022 AT 12:52 PM
Tiny
FLIPPA334
  • MEMBER
  • 37 POSTS
Okay. Thank you. Are the catalytic converters from Ebay that come in a set for the front good converters.
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Friday, June 10th, 2022 AT 5:45 PM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
As long as those converters are the OEM style and meet the emission standards they will work just fine.
Keep in mind that some of the aftermarket converters are not as efficient as they need to be. Ideally you want to get something that has a good customer reviews.
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Friday, June 10th, 2022 AT 10:32 PM

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