What type of metal is the exhaust manifold?

Asked by Guru6QCN3 Mar 26, 2020 at 06:42 PM about the 2003 Hyundai Sonata

Question type: Car Customization

I've got a friend who cut his catalytic converter off this car.
He says it bolted to the manifold and he wants me to weld
pipe to it and replace the area where the converter was.
Question is what's the manifold made of? Is it cast
aluminum or cast iron or what?

3 Answers


Could be done but wouldn't it be better to bolt the manifold to another cat mounting plate and then weld the pipe replacement between it and the other end of the exhaust pipe? It would be easier to work on down the road.


Even if you manage to get a clean weld (nearly impossible to cast iron) the weld will crack. Use the proper flange and donut seal.

Your Answer:


Looking for a Used Sonata in your area?

CarGurus has 1,633 nationwide Sonata listings starting at $2,995.

Postal Code:

Hyundai Sonata Experts

  • #1
  • #2
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Hyundai Elantra
86 Great Deals out of 4,816 listings starting at $2,495
Used Honda Accord
40 Great Deals out of 1,808 listings starting at $2,995
Used Toyota Camry
66 Great Deals out of 1,971 listings starting at $3,857
Used Kia Optima
11 Great Deals out of 787 listings starting at $5,250
Used Nissan Altima
44 Great Deals out of 1,255 listings starting at $3,213
Used Honda Civic
117 Great Deals out of 6,665 listings starting at $2,495
Used Chevrolet Malibu
35 Great Deals out of 1,552 listings starting at $3,450
Used Toyota Corolla
160 Great Deals out of 5,728 listings starting at $2,495
Used Nissan Maxima
12 Great Deals out of 374 listings starting at $128
Used Hyundai Santa Fe
40 Great Deals out of 2,333 listings starting at $2,750
Used Mazda MAZDA6
11 Great Deals out of 487 listings starting at $2,995

Used Cars for Sale

2020 Hyundai Sonata For Sale
466 listings starting at $26,999
2019 Hyundai Sonata For Sale
8 Great Deals out of 190 listings starting at $17,895
2018 Hyundai Sonata For Sale
10 Great Deals out of 126 listings starting at $13,459
2017 Hyundai Sonata For Sale
7 Great Deals out of 108 listings starting at $8,990
2016 Hyundai Sonata For Sale
5 Great Deals out of 140 listings starting at $7,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.