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FREE SHIPPING on US orders over $75 (oversize excepted) • Quality used E36 & E46 parts • Every part inspected & graded
3 Series Parts

Connecting line

BMW Part Number:11 15 7 503 523
11157503523short number 7503523
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One email the moment one is listed — nothing else.

Fits E46 — 316i, 316ti, 318Ci, 318i, 318ti
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Connecting line – BMW diagram03 View BMW DiagramSee this part on the official exploded view

This is a genuine BMW connecting line, part number 11 15 7 503 523. The number stamped on the part is 11157503523; BMW's catalog files it under the short number 7503523. You will find it on our Engine shelf, under Crankcase ventilation.

It fits every E46 body style (316i, 316ti, 318i and 318ti, 2001–2004), with the N42 or N46 engines.

BMW draws it on 2 diagrams, among them Crankcase-Ventilation/oil separator (11_3180) and Crankcase-Ventilation/oil separator (11_3724). It weighs about 30 g (under 0.1 lb).

We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.

Details

BMW Part Number11 15 7 503 523
Also written as111575035237503523
QualityGenuine BMW · OEM

Every used part is inspected and graded before listing. Condition grades:

  • Good — minimal wear, fully functional.
  • Fair — normal wear, fully functional.
  • Acceptable — visible wear, still functional.

Returns: 30 days if a part arrives damaged or isn't what the listing described. Full policy.

Shipping: Ships within the US. Orders ship within 1–2 business days; small parcels ship free on orders of $75.00 or more. Oversize items ship at a flat $49.99 each — free shipping does not cover them.