There are two on mine and it is totally stock.
It has two catalytic converters, one for each bank.
Catalytic converters are part of the exhaust system under the vehicle. They are right after the exhaust pipes come down from the engine
The 2004 Jeep Liberty with a 3.7L engine has two catalytic converters. This is because the engine has two separate exhaust manifolds, each of which is connected to a separate catalytic converter. The two catalytic converters help to reduce the emissions produced by the engine, and they are located underneath the vehicle, near the exhaust system.
The 2006 Chevrolet Express has a V6 engine.
The 2011 Chevrolet Express has a V8 engine.
The 2012 Chevrolet Express has a V8 engine.
The 2002 Chevrolet Express has a V6 engine.
The 2001 Chevrolet Express has a V6 engine.
The 2007 Chevrolet Express has a V8 engine.
The 2009 Chevrolet Express has a V8 engine.
The 2014 Chevrolet Express has a V8 engine.
The 2004 Chevrolet Express has a V6 engine.