Review on Walker 16392 Direct Catalytic Converter by Nathan Guzman

I bought front and rear catalytic converters (bank 1 and bank 2 converters) in February 2016. The rear catalytic converter started making noises after an 11 month local ride in Las Vegas, Nevada (about 9,000 miles) due to a small crack in a steel pipe on the manifold. At that point, I didn't realize how bad it was going to get. After 16 months, the exhaust leak made such a loud noise that it shocked all nearby animals that even smoke began to enter the driver's compartment. And the crack became a clear gap between the steel pipe. From the crack, the steel material could be seen in a finer particle form, where impurities were found, and a thinner tube wall that would not and would not withstand the extreme heat of the exhaust gases and resistance to high temperatures. In addition to the rare metals in the converter core, the quality of the steel tube plays an important role in the design of the manifold for all catalytic converters. Carbon steel and forged steel are always used under extreme conditions. Worst of all, my front catalytic converter (bank 2) also started cracking at the steel header pipe after 18 months (14,000 miles), although this happened after about 6 months. It was obvious that tubular steel was used both front and rear. All catalytic converters were low quality and poor quality, but still differed from each other on the same engine exhaust, either due to steel pipe production quality control or during the steel pipe cutting and bending process during the exhaust manifold welding step. As a result, the low-quality manifold could not withstand and withstand the strictly high-quality converter under extreme heat treatment conditions. Thanks for the Walker warranty exchange, I can still apply for warranty support.