Fuel line O ring

[BodyshopBri]

Hi guys, I have a air leak on one of my o rings to an injector. Just spent £44 on 4x upper and 4x lower injector seals from BMW. I also ordered a fuel rail o ring but BMW just emailed me saying they have been removed from their catalogue, are no longer available and no alternatives. I don't want to break the fuel system open unless I have one available. I tried Sunderland / Stevenage Main Dealers. Looked on ebay, no luck.
Part number :

13531247953

Does anyone have 1 spare for sale or measurements so I can search for an alternative.
Thanks in advance.
Brian

 

[bmwz3tower]

Hi guys, I have a air leak on one of my o rings to an injector. Just spent £44 on 4x upper and 4x lower injector seals from BMW. I also ordered a fuel rail o ring but BMW just emailed me saying they have been removed from their catalogue, are no longer available and no alternatives. I don't want to break the fuel system open unless I have one available. I tried Sunderland / Stevenage Main Dealers. Looked on ebay, no luck.
Part number :

13531247953

Does anyone have 1 spare for sale or measurements so I can search for an alternative.
Thanks in advance.
Brian

I had this same issue, I bought a box of nitrile o rings from screwfix and tried them until one of them fit. I can't remember what size it was, but it hasn't leaked

 

[Althulas]

Have you tried this site? https://www.mlperformance.co.uk/products/genuine-bmw-13531247953-e36-e34-e46-oring-inc-z3-18 I would call them though to make sure they actually have it in stock.

I also used for online bulk buying though to get your postage worth from Sumter Stevenage https://www.sytnerstevenagebmwparts...1/13531247953.html?clickSource=relatedProduct

Otherwise as suggested above.

 

[Pingu]

Avoid NITRILE and use VITON if available.

NITRILE's temperature limit (100°C) is very close to an engine's running temperature. VITON has a higher temperature rating (205°C).

VITON is much more expensive that NITRILE. The difference between 50p and £1.50 isn't a factor for us. We aren't buying a million O-rings, unlike BMW.

These may be the ones you are after...

Google Search

The size is on the appropriate RealOEM page, I used Item 4 from the page for my car...

RealOEM.com - Online BMW Parts Catalog

BMW parts Z3 E36 Z3 M Valves/Pipes of fuel injection system

www.realoem.com

 

[bmwz3tower]

Avoid NITRILE and use VITON if available.

NITRILE's temperature limit (100°C) is very close to an engine's running temperature. VITON has a higher temperature rating (205°C).

VITON is much more expensive that NITRILE. The difference between 50p and £1.50 isn't a factor for us. We aren't buying a million O-rings, unlike BMW.

These may be the ones you are after...

Google Search

The size is on the appropriate RealOEM page, I used Item 4 from the page for my car...

RealOEM.com - Online BMW Parts Catalog

BMW parts Z3 E36 Z3 M Valves/Pipes of fuel injection system

www.realoem.com

Thanks for the tip on Nitrile vs Viton, I think I'll switch my o-ring

 

[BodyshopBri]

Purchased x2 o rings from mlperformance. Used a discount code BF15, gave me a few pence off Thanks Althulas
Just had a long read up on yosonseals.com. Viton definitely the way to go.
Nitrile is ok for most things around the engine, gearbox and drivetrain. However the ethanol in todays fuel makes nitrile degradation a significant factor as well as temperature limits mentioned by Pingu
The o ring in question is no 16
Because its a BMW discontinued part, I'll take some measurements and add to this thread when I receive them.
Thank you for the help and replies.
Always appreciated