BMW Vent Pipe / Crankcase Vent-Line – 7438487 (320i, 328i, 330i, 335i, 4-Series & i-Drive Models)

Restore your BMW’s crankcase ventilation system with this high-quality vent pipe (part 7438487 / 16137438487). Designed for various BMW 3 Series and 4 Series models, this breather hose includes a built-in dust filter to protect against contamination while maintaining proper crankcase pressure. Over time, the factory plastic pipe may become brittle or cracked — replacing it helps eliminate oil leaks, reduces unwanted whistling or hissing, and ensures your engine runs cleanly.

OEM Number: 16137438487, 16137839801, 7438487, 16-13-7-438-487,

QTY. : 1

Our SKU: TB16137438487_94 

All our Vent Pipe For Bmw 320I, 328I, 330I, 335I, 428I, 430I, 435I, 440I Xdrive 7438487 are OEM quality and reliable after market car parts. This Vent Pipe For Bmw 320I, 328I, 330I, 335I, 428I, 430I, 435I, 440I Xdrive 7438487 is specifically compatible with .

Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.

If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.

❓ FAQs — BMW Vent Pipe 7438487

1. What does this vent pipe / breather hose do?
It channels crankcase gases out of the engine into the intake or ventilation system, helping to regulate pressure, reduce emissions, and prevent oil leaks.

2. Which BMW models use part 7438487?
This part numbers is associated with BMW 3 Series (F30 / F34) and 4 Series (F32 / F33) models — but you should check compatibility by VIN or the part on your current system.

3. What are symptoms of a failing or cracked vent pipe?

• Whistling or hissing noise from the engine bay (common on outdated breather pipes).

• Oil residue / leaks near the pipe or in the engine bay.

• Check engine light due to improper crankcase pressure.

4. Is there a dust filter in this pipe?
Yes — this version includes a dust filter to prevent dirt and other contaminants entering the ventilation system.

5. How difficult is it to replace this pipe?

• Relatively straightforward: remove any clamps, unclip the old pipe, and install the new one in the correct orientation.

• Be careful when removing to avoid damaging related parts.

• After replacement, check for leaks and ensure all connections are solid.

6. Will replacing this pipe fix oil smell in the cabin?
It can help. A cracked or leaking breather pipe may allow oily vapours to escape, which could lead to a smell in the engine bay or, in some cases, the cabin.

7. Why does this pipe become brittle / fail?
Due to age, heat, and exposure to engine gases, the plastic can degrade over time. Owners commonly report this failure, especially on older BMWs.

8. Do I need to replace any o-rings or seals when fitting this part?
Yes — it’s a good idea to inspect any rubber seals or O-rings, and replace them if they’re worn, to maintain a good seal and avoid leaks.