VW/Audi single use banjo bolt

[Tim W]

The high pressure fuel pump/rail on my Audi (petrol) uses a banjo bolt which states "single use" - it doesnt use any sealing washers and has a ridge that locates inside the banjo fitting. I tried reusing them but the star drive head distorted when tightening to 40Nm (haynes manual spec) and yes, they leak.

(VAG part number is WHT000138A)

Problem is, they're no longer available, like many parts on the AWA type engine. They're also an odd size, M12x1, (common size seems to be M12x1.5
Does anyone know of the name of this type of bolt or anywhere I can buy them?

I have found some traditional type M12x1 banjo bolts and washers, but am a bit wary of using them on a HPFP, especially as any leaks go in the direction of the (very hot) EGR link pipe...

Any thoughts?

 

[DickyDoDah]

It's a ridiculous situation that the manufacturers put us in. I recently needed rear axle bushes for my Nissan Note but Nissan only list them as part of the full axle. Estimated cost was £1800 which was the price I paid for the car 4 years ago. I found the Renault equivalent and they were £28 a pair from a local motor factors
I would suggest a good quality replacement such as these Hel ones will be even better than the original as they are stainless.

Pardon our interruption...

 

[grim_d]

Stick a couple copper washers on it.

 

[Ubique]

I wouldn't use stainless, more likely to fracture with the pressure & vibration on an engine -different with brakes.
Copper washers will be fine, if you're worried, anneal them first so you can be sure they'll deform and seal.