Helpdesk code:

C014A

Seal Ring, valve stem

Product number: 843.040
ART: 843.040 / EAN: 4041248766293

Price incl. vat.
€ 1,61

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Leverdatum: 03-06-2026

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Manufacturer	Model	Version	Engine code	Construction type	Construction start	Construction end	Pk	Power kw
AUDI
CUPRA
FORD
SEAT
SKODA
VW

Manufacturer	Productnumber
FORD	2 554 926 , 2554926
FORD	VWN3CA6571CA
SEAT	04E 109 675 L , 04E109675L
SEAT	04L 109 675 A , 04L109675A
SEAT	05L 109 675 , 05L109675
VW	04E 109 675 L , 04E109675L
VW	04L 109 675 A , 04L109675A
VW	05L 109 675 , 05L109675
SKODA	04E 109 675 L , 04E109675L
SKODA	04L 109 675 A , 04L109675A
SKODA	05L 109 675 , 05L109675
AUDI	04E 109 675 L , 04E109675L
AUDI	04L 109 675 A , 04L109675A
AUDI	05L 109 675 , 05L109675
CUPRA	04E 109 675 L , 04E109675L
CUPRA	04L 109 675 A , 04L109675A
CUPRA	05L 109 675 , 05L109675

Usage numbers
EL843040
843.040
4
04125E+12
MEC843040

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Seal Ring, valve stem

The Seal Ring, valve stem (843.040) prevent oil from leaking into the combustion chamber. Replacing them with Porza-quality seals restores clean combustion, reduces oil consumption, and protects engine components.

FAQ

A seal ring for a valve stem, often referred to as a valve stem seal, is a sealing component installed on the engine valve guides. Its function is to regulate the amount of oil entering the combustion chamber and prevent excessive oil consumption.

Key specifications include inner diameter, outer diameter, height, material (such as rubber, FKM, or PTFE), temperature resistance, and compatibility with the engine. It must withstand high temperatures and continuous valve movement.

Replacement is necessary when the seal is worn, hardened, or leaking. Common symptoms include blue exhaust smoke, increased oil consumption, or fouled spark plugs.

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

Porza provides high-quality engine 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

Height ()	10.2
Inner diameter ()	7.8
Outer diameter ()	10.5
Material	fpm (fluoride rubber)
Valve stem Ø (mm)	5
Outer diameter (mm)	10.5

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