It depends on the engine/manufacturer. For example, Chev 350: #1 is left bank front, #2 is right bank front. Answer The above is true, but in addition there is a visual way to tell as well. If you look at the engine block you should be able to see one of the cylinder heads, or the forward part of the casting in the block is ahead of the other side (this is because if you look at the internal components of the engine you will see 2 connecting rods will be on a single journal of the crankshaft of any V configured motor one piston is slightly ahead of the other, modern maching and casting of engine blocks will have a slight setback on one side; I am not sure but this may not be the case on very old engine blocks due to far less sophisticated casting and machining prior to the end of WWII ?) In every case that I have seen the forward most cylinder is the #1 cylinder. Additionaly Chevy does number there cylinders alternating like described above, Ford will number 1-4 on one bank 5-8 on the other in either case the forward most cylinder is the 1# cylinder.
Bank # 1 is the passenger side of the engine
On the exhaust pipe It is before the catalytic converter on the same side as cylinder #1.
Bank 1 is the passenger side of the engine , bank 2 is the drivers side of the engine
On a 2005 Kia Optima, the bank 2 sensor 1 oxygen sensor is located on the exhaust system, specifically on the exhaust manifold or just after it. Bank 2 refers to the side of the engine opposite to bank 1, which is typically where cylinder 1 is located. For the 4-cylinder engine, this means bank 2 is on the opposite side of the engine, while for the V6, it will be on the side that does not contain the first cylinder.
Bank 1 would be the bank of cylinders that contain cylinder number 1. Bank 1 on the 3.9 would be the bank of cylinders located on the drivers side of the engine. Bank 1 sensor 2 would be the O2 sensor located after the catalytic converter.
In the 2004 Lincoln LS with a 3.0-liter V6 engine, Bank 1 and Bank 2 refer to the two sides of the engine. Bank 1 is located on the side of the engine where the cylinder number 1 is situated, typically the front side when facing the engine. Bank 2 is on the opposite side. If you're looking for specific components like the oxygen sensors or fuel injectors, they will be located on their respective banks as well.
Bank 1 is the drivers side of the motor, making bank 2 the passenger side of the engine. Bank 1 Sensor 1 will be located before the Catalytic converter, Bank 1 Sensor 2 would be located after the Cat. This is of course assuming your vehicle is equipped with the California emissions having a total of 4 O2 sensors.
Bank 1 would be the bank of cylinders that contain the number 1 cylinder. If it is a 4 cylinder engine there is only one bank. So, bank 1 sensor 1 would be the first sensor you come to in the exhaust system leaving bank 1 of the engine.
Assuming this is a 4.3L engine, bank 2 sensor 1 would be the first O2 sensor located in the exhaust header pipe on the passenger side of the engine.
On a Ford Mustang ( V6 and V8 ) Bank 1 is the passenger side of the engine
Bank 1 = The side of the engine the Number 1 cylinder is on Sensor 1 = between engine and catalitic converter Sensor 2 = After cat...
Bank 2, Sensor 1 is located on the front of the engine(radiator side), before the first catalytic converter.