Unfortunately, if you need to get it changed, then suggest to go to a place where they weld and put on mufflers.
But make sure they put the heat shields on the new one from the old one. Also, when you get home, then wait for the engine to cool. Then later, say the next day start the engine and put it in park. Go the passengers side and inspect the converter. Put your hand where they welded it, so make sure it is a GOOD weld and no air escaping.
Also, if you find a shop, check their prices for the convertors and check the other auto stores too.
4
The four cylinder model has one catalytic converter.
It has 3 .
A 2003 Ford Expedition typically has two catalytic converters. This is due to its V8 engine configuration, which requires one converter for each bank of cylinders. The converters are part of the vehicle's exhaust system, helping to reduce harmful emissions.
My 2003 model has 4 sensors. Two are before the catalytic converters and two more after the cat converters..
Look under the vehicle and count them.
The 2003 Cadillac DeVille typically has two catalytic converters. One is located on each side of the exhaust system, as the vehicle is equipped with a V8 engine. These converters are part of the vehicle’s emissions control system, helping to reduce harmful exhaust emissions.
1 on a 6cly. 2 on a v8
Crawl under the vehicle and count them.
One. If the van has dual exhaust, then two.
On a 2003 Nissan Pathfinder, catalytic converters are located in the exhaust system, typically positioned just after the exhaust manifold and before the muffler. There are usually two converters: one for each bank of cylinders in the V6 engine. They are mounted along the vehicle's undercarriage, making them accessible from below for inspection or replacement.
If the converter is defective there is no alternative. You must replace it.