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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

O-ring

BMW Part Number:13 71 1 720 540
13711720540short number 1720540
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One email the moment one is listed — nothing else.

Fits E36 / E46 — 325i, 325is, M3, 320Ci, 320i, 323Ci, 323i, 323i 2.4 +8 more
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

O-ring – BMW diagram06 View BMW DiagramSee this part on the official exploded view

O-ring — a genuine BMW part, number 13 71 1 720 540. The number stamped on the part is 13711720540; BMW's catalog files it under the short number 1720540. You will find it on our Air Intake shelf, under Intake silencer. It supersedes the older number 1747640, so a part carrying that number is the same part.

It fits the E36 sedan, coupe and convertible (325i and M3, 1992–1995), with the M50 or S50 engines. It also fits every E46 body style (320i, 323i, 325i, 328i and 330i, 1999–2006), with the M52 or M54 engines — and the European-market versions.

BMW draws it on 17 diagrams, among them BMW Performance air filter (03_0221) and Suction Silencer/Filter Cartridge (13_0370). It weighs about 10 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 Number13 71 1 720 540
Also written as137117205401720540
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.