The oil pressure sensor on a 2004 BMW 325i is located on the bottom, right side of the engine. It is screwed into the block and has an output wire which sends information to the computer.
There is no dip stick all they have now is a low oil pressure sensor
plugs into the rear differential
The temperature sensor on a BMW 325i is located on top of the engine, near the upper radiator hose. It constantly monitors the temperature of the coolant and triggers the cooling fan as needed.
Bolted into the bottom of the oil pan.
How often need to change the fuel filter for a 2001 BMW 325i?"
it has chain
go to a battery store
An e46(2001-2006) 325i/xi has a 16 gallon gas tank
in the intake air box
650
I do not see the 2004 BMW 325i listed in aftermarket catalogs which suggests its a dealer-only part number. Since you have to go to the dealer, they can get you the correct parts.
A 2001 BMW 325i has two coolant temperature sensors. They constantly monitor the temperature and adjust flow as needed.