Review on Dorman 673 439 Integrated Catalytic Converter by Maurice Strawther

Originally purchased in 2016. It fits, the sensors fit and everything was smooth when new, it just suffers from the same problem as the stock header. . It has been less than 2 years and the manifold cracked after about 40-60k miles. It's cast iron, so I expected it to crack, but assumed it would last at least 100,000 miles. If you need a more permanent solution, I suggest upgrading your entire exhaust system to stainless steel and moving the catalytic converter under the car. I live in California so everything has to be CARB compliant which makes the parts more expensive and I really don't want to waste over $400 and haphazardly wasting a few hours a day for a year replacing something that does shouldn't break every 2 years. For those who don't do their own repairs, troubleshooting is even more expensive. It would be nice if Dorman only sold the top as I need it and the catalytic converter underneath works fine, but hey, this is business.