How much does a catalytic converter replacement cost?
Replacing a melted catalytic converter is an expensive repair that causes major vehicle issues, often requiring specific vehicle model compatibility like a 2000 4Runner. Because parts can be pricey and failures create massive mechanical headaches, finding a reliable replacement solution becomes a major burden for owners.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1purchasing cheaper aftermarket catalytic converters
- 2verifying sensor bung placement on replacement parts
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
r/MechanicAdvice2 people · September 2026 – October 2026
Where this came up
People with this problem also raised
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