Rep Power: 0

I recently had engine failure from block crack . Dealership replaced block and rebuilt engine under warranty even though 07 model had 260000 miles. Very impressed and grateful for work. Now couple months later getting engine code saying catalytic converter issue. Have seen threads where this failure was connected with engine failure and owner was able to get help from dealer. Given miles on my Civic does everyone think that would be unrealistic expectation ( dealer help ) or not. Also , what is best aftermarket CC. ?

 
Rep Power: 308

That's a lot of miles.....

You could give it a try.

Not sure I'd go 3rd party though.

 
Rep Power: 518

I would not blame the engine or the dealer.

I'd expect the high mileage wore out the cat.

 
Rep Power: 0

260 k on a cat?? I hope mine last that long

 
Rep Power: 367

it's quite a fast cat. Cheetahs?

 
Rep Power: 208

Poorly running engines can decrease the life of the cat (unburnt gasoline). I had one go out after driving with a misfire. With all of the miles on yours that seems about right.