The 2003 Lincoln Aviator typically has four catalytic converters. Two are located in the exhaust system for each bank of the V8 engine, with additional converters in the exhaust system to help reduce emissions. These converters play a crucial role in ensuring the vehicle meets environmental regulations.
look in your owner's manual
According to the 2003 Lincoln Aviator Owner Guide , the 4.6 liter V8 takes ( 6 quarts ) with engine oil filter change
1.30 kg (46 oz)
Just look under the vehicle and count them and you will have your answer.
According to the 2003 Lincoln Aviator Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts )
The 2003 Lincoln Aviator is equipped with a total of four oxygen sensors. There are two upstream (pre-catalytic converter) and two downstream (post-catalytic converter) sensors. These sensors monitor the exhaust gases to help optimize fuel efficiency and reduce emissions.
The aviator does not come with a cabin filter. It uses an air exchange system instead although many places show a filter for this model it does not have one you would be wasting your money
2
Two
4
My 2003 model has 4 sensors. Two are before the catalytic converters and two more after the cat converters..
Look under the car and count them.