Helpdesk code:

6281F

Shaft Seal, crankshaft

Product number: 20033891B
ART: 20033891B / EAN: 3358960207623

Price incl. vat.
€ 103,98

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Leverdatum: 17-05-2026

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Manufacturer	Model	Version	Engine code	Construction type	Construction start	Construction end	Pk	Power kw
BMW

Manufacturer	Productnumber
BMW	11147512101
BMW	1440336
BMW	7512101

Usage numbers
82033891
CSFT

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Shaft Seal, crankshaft

The Shaft Seal, crankshaft (20033891B) seals engine oil at the crankshaft exit point. Replacing it with a Porza-quality seal restores oil retention, engine protection, and long-term reliability.

FAQ

A shaft seal for a crankshaft is a sealing component installed at the front or rear of the crankshaft. Its function is to prevent engine oil from leaking out and to keep contaminants from entering the engine.

Key specifications include inner and outer diameter, thickness, material type (such as NBR or FKM), temperature resistance, and compatibility with the engine. It must withstand rotation, pressure, and exposure to oil.

Replacement is necessary when the seal is worn, hardened, or leaking. Common symptoms include oil leaks at the front or rear of the engine, oil contamination, or reduced engine efficiency.

Porza offers a fit guarantee option where your vehicle details are checked against product specifications to ensure correct compatibility.

Porza provides high-quality sealing components with fast delivery across Europe and options for online ordering or in-store pickup.

If the fit guarantee is selected, compatibility is verified before shipping. If the product does not fit, it can be returned according to the return policy.

Straelseweg 52, 5911 CR
Venlo
The Netherlands

Willem de Rijkelaan 15a, 5616 HH
Eindhoven
The Netherlands

info@porza.nl
085 401 1901
KVK 0123456678
BTW 01NL123435B1

Weight	0.48 kg
Height ()	40
Inner diameter ()	100
Outer diameter ()	250
Material	ptfe (polytetrafluoroethylene)/acm (polyacrylate rubber)
Fitting position	transmission sided
Supplementary article/supplementary info 2	with mounting sleeve with flange
Height 1 (mm)	40
Inner diameter 1 (mm)	100
Outer diameter 1 (mm)	250
Weight	0.48 kg

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