How to install fuel filter e46 2002 bmw 330ci?

Just copy from e46fanatics.com you may want to go there:
Useful info for changing FUEL FILTER

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Changing the fuel filter is straight forward. it's very easy. Follow the many DIY on this board about changing the OEM fuel filter.

Here are some info that you may find useful.

1 The fuel filter is directly underneath the driver seat on the under cart of the car.

2 There are two ends on the fuel filter. The IN put is toward the gas tank. The OUT put is toward the front of the car. there's an arrow painted on the fuel filter. Just be sure the arrow is pointing toward the front and you'll be OKAY.

3 there's a shield defending the fuel filter from to get all banged up. Use 8mm socket to take off the nuts.

4 After removing the shield, the fuel filter is secured by a bracket. Use a 10mm socket to take off it.

5 The hose are secure by a bunch of clamps. Use a "flat top" screw driver to loosen the clamps. To tighten the clamps use a 7/32 socket or a pair of plier. You can not tigten the clamps with a flat top screw driver.

6 Remove the rubber hose by wedging a screw driver on the rubber hose while pulling and twisting the fuel filter.

7 Be prepare to have lots and lots of fuel leakage. Clean fuel now. FUel will evaporate faster when smear around rather than sitting in a puddle.

SAFETY TIPS

1 Change fuel filter only in ventilated area. I changed my fuel filter outside and still I still feel sick.

2 Have a fire extinguisher prepared in case. could you rather take the time to purchase or find a fire extinguisher than have your car destroy or blow up?

3 When removing the fuel line or when fuel are leaking out, be sure you priodically ground yourself from static electricity. Just touch all the metal/steal parts underneath your car every two three minutes or so.

is the car under warranty? I could say if it is not, I could still go to the dealer and have them replace it. If you install it wrong, then you may be able to damage the engine. GO to the dealer and learn how much it'll cost?? if its under warranty, then its free