Coolant bushing / cotter pin? DB9 V12

[Littledoug7]

I've managed to literally blow up the cotter pin of where the coolant pipe connects to the engine (see pics).
Besides the story of how it happened being embarassing I have two problems you surely can help me with:
- Whats the exact name or even number or the part ? ( attached some pic with the good part on the other pipe)
- How to fix it (have some temporary fix with a strong wire see pic) i.e. does the cotter pin sell seperately (alternative parts?), need to change whole pipe, bushing? Anyone any experience with that?

Highly appreciate any input (in return I can share how I did blow it up)
Yours, Stefan

[Littledoug7]

Here's full pic of good part

[Simpo Two]

Maybe here? https://www.astonmartinbits.com/

[Littledoug7]

Simpo Two said:

Maybe here? https://www.astonmartinbits.com/

sure..many options for parts...if I only knew part number or item title..

[Littledoug7]

should be #1 in this drawing

probably this part: 8D33-8333-AA

Now: Any hints if I could get the ferrule somewhere? i would think any AM workshop should have several of these lying around, dont you think?

Edited by Littledoug7 on Wednesday 31st May 14:29

[kabman]

That's a fairly generic part. No need to pay the Aston tax. Just search for 'coolant hose flange clip'.

For example:

https://www.ebay.co.uk/itm/174794733040?mkevt=1&am...

Edited by kabman on Thursday 1st June 09:25

[Littledoug7]

thanks, looks good at first glance, but couldnt find one in the massive size of AM (50mm width) and the two "feet" being same side not opposite

[Simpo Two]

A foot in the wrong direction might be bent the other way with pliers. Can't help on the size though.

I don't understand what the short plastic section is for. Why doesn't the hose fit straight onto the metal - is it acting as an adaptor?

[Littledoug7]

Simpo Two said:

I don't understand what the short plastic section is for. Why doesn't the hose fit straight onto the metal - is it acting as an adaptor?

It's a glass fiber strengthened fairly rigid part. I assume the rubber would be too soft to stay in place with the pressure and vibration.

[kabman]

If you can't find one big enough, search instead for intercooler hose clips. They tend to be larger diameter.

They are used for all sorts of applications, not just cars.

[ridds]

The plastic of the hose end is damaged in that picture, it's unlikely to stay on with a new clip I'm afraid.

You would be best to replace it.

Commonly known as "Norma" hose ends. https://www.norma-aftermarket.com/en There are a LOT of variations of each size though.

Only comes as part of the hose assembly from AML. You could source a hose end and replace your broken one on the current hose.

[AM4884]

Sorry for your loss.

These types of "quick connect" fittings became popular 30 years ago as they make the assembly of a motor easier. Quality control (did it get installed correctly?) is easier, and it's much faster than tightening a screw clamp or a double ear band clamp. Makes the hose more expensive but well worth it to AM where labor costs are a key driver.

[Littledoug7]

thanks guys. very helpful. did buy a replacement hose and will do the replacement then.