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Heads Up: R8 V8 Rear Ball Joint Replacement

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#42 ·
DaveL said:
Share the link to the company please.
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scooby said:
Ive just bought 42A505311B 420505375 & 42A505312B 420505376 from a French company shipping from Netherlands.

These are the original V8 items. So just replace the two rears and job done!

A
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Great work indeed... however looks like the last of these have been sold now and currently out of stock... have emailed to see if they can get more. Keeping mindful that the new versions of these parts are the same part number, right? So they might list the same part number but actually it's a different fitment...
 
#43 ·
itsav8mate said:
Hi all - for your awareness, I had this issue with the front and rear of my '07 V8 - and Audi's path was indeed to fit the later part number components. My 3rd party Warranty provider covered what would have been a £5,300.00 bill (though may have been less with some negotiation and goodwill). Note though that the warranty provider did wriggle a bit as initially they felt that this was not a repair, and was an upgrade/modification. Took some to-ing and fro-ing to get Audi to share the workshop guidelines.
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Hey, I see you are using £ so guessing you are UK based... can you recommend your third party warranty provider? I've been looking for a good one that will cover things like this,
(matters Audi's own extended warranty doesn't cover as it's seen as 'wear and tear'.)

Thanks!
 
#44 ·
Wanderingmind83 said:
Hey, I see you are using £ so guessing you are UK based... can you recommend your third party warranty provider? I've been looking for a good one that will cover things like this,
(matters Audi's own extended warranty doesn't cover as it's seen as 'wear and tear'.)

Thanks!
Click to expand...
had a guy on 8r owners uk on facebook reckon his audi one covered the suspension! but there is the issue my dealer knew it was worn, so did MOT, so existing condition etc
 
#45 ·
Wanderingmind83 said:
Great work indeed... however looks like the last of these have been sold now and currently out of stock... have emailed to see if they can get more. Keeping mindful that the new versions of these parts are the same part number, right? So they might list the same part number but actually it's a different fitment...
Click to expand...
The new ones are the V10 versions and are 420505311D / 420505312D and thus AUDI wanted to replace the whole lot. See attached image of quote. later ill post of a guy who fitted the V10 one alone and said it was all good ... ill pop up later this aft when back home. Andy
Image
 
#46 ·
This is from another R8 V8 owner using the V10 part as a direct replacement. He wants to stay anonomous ut here are his words and pictures.

Andy
+++++++++++++++++++++++++++++++++++++++++++++++++
On the photo with the red arrows, you see the taper marked. It is exactly like on the M12 and M14. Only the treaded part is different, but the hole for the treads in the upright is close to 19 mm, so it works just fine.

My car is a -08, produced in -07.

But, to be sure, you can take of the bolt under the upright to see that it is space around it. The torque when you put the M12 nut back on is 110nm.

When searching for the arms, the parts number on the package is 420505311D and ..312D.

Number cast into the arm is 420505375 and ...376.

On the new arms with a M14 nut, torque is 160nm when putting it together.
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#47 ·
scooby said:
This is from another R8 V8 owner using the V10 part as a direct replacement. He wants to stay anonomous ut here are his words and pictures.

Andy
+++++++++++++++++++++++++++++++++++++++++++++++++
On the photo with the red arrows, you see the taper marked. It is exactly like on the M12 and M14. Only the treaded part is different, but the hole for the treads in the upright is close to 19 mm, so it works just fine.

My car is a -08, produced in -07.

But, to be sure, you can take of the bolt under the upright to see that it is space around it. The torque when you put the M12 nut back on is 110nm.

When searching for the arms, the parts number on the package is 420505311D and ..312D.

Number cast into the arm is 420505375 and ...376.

On the new arms with a M14 nut, torque is 160nm when putting it together.
----------
Click to expand...
I'm not an expert here, but this doesn't sound like a good idea. An ISO metric screw/nut that's M12 is not the same as M14. The obvious part is that they're 2mm in difference, but the not so obvious part is that the thread is likely different. I believe the default "coarse pitch" of the thread is different from the M12 to M14 - so even if they look to be seating, I'd imagine it's not going to be as designed. What are the ramifications of that under stress and over time? I don't know. When you're putting together a bookshelf from IKEA, maybe that's not the biggest deal, but holding together a suspension control arm on your supercar?

Personally, I'd just bite the bullet and do it the right way. Finding original V8 replacements certainly works (scarce as they appear to be). Otherwise, I'd just do the full V10 conversion - wouldn't attempt a Mr. Potato Head mix-and-match on your suspension. I have to say, I do find it ironic that people would value and seek out owning a supercar, which presumably represents the finest in engineering a company can offer their customers, only to "maintain" it by disregarding design, engineering, and testing altogether in order to save some money. I get it, they're expensive - but who here should be surprised that big bills can come with expensive cars?

Hopefully anyone doing stuff like this is honest enough to disclose it to potential buyers in the future.
 
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#48 ·
ezmaass said:
I'm not an expert here, but this doesn't sound like a good idea. An ISO metric screw/nut that's M12 is not the same as M14. The obvious part is that they're 2mm in difference, but the not so obvious part is that the thread is likely different. I believe the default "coarse pitch" of the thread is different from the M12 to M14 - so even if they look to be seating, I'd imagine it's not going to be as designed. What are the ramifications of that under stress and over time? I don't know. When you're putting together a bookshelf from IKEA, maybe that's not the biggest deal, but holding together a suspension control arm on your supercar?

Personally, I'd just bite the bullet and do it the right way. Finding original V8 replacements certainly works (scarce as they appear to be). Otherwise, I'd just do the full V10 conversion - wouldn't attempt a Mr. Potato Head mix-and-match on your suspension. I have to say, I do find it ironic that people would value and seek out owning a supercar, which presumably represents the finest in engineering a company can offer their customers, only to "maintain" it by disregarding design, engineering, and testing altogether in order to save some money. I get it, they're expensive - but who here should be surprised that big bills can come with expensive cars?

Hopefully anyone doing stuff like this is honest enough to disclose it to potential buyers in the future.
Click to expand...
fair call. Isnt he say that the M14 nut has room to fit? It would be interesting too have both parts side by side to see if the only change is the bold size...... Anyway Ive got my invoice with the correct part numbers on it for my "evidence" if needed when selling in the future :)
 
#49 ·
scooby said:
fair call. Isnt he say that the M14 nut has room to fit? It would be interesting too have both parts side by side to see if the only change is the bold size...... Anyway Ive got my invoice with the correct part numbers on it for my "evidence" if needed when selling in the future :)
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I am just going through this process , when you look in detail at the bearing housing the V8 and V10 are the same, so the " upgraded arms " should fit the old housing ?
 
#50 ·
Cheshire MS said:
I am just going through this process , when you look in detail at the bearing housing the V8 and V10 are the same, so the " upgraded arms " should fit the old housing ?
Click to expand...
thats why i added the last few replies... a guy has done that and is happy .. ive found a new set of orginal arms, so if anyone has V10s, we can compare.

A
 
#51 ·
hello,
I have the same probleme: Old number 10 is broken on my R8 V8 2007 :

253191


For Audi, it is not his responsability, because not a technical return, just a BST ....thank you Audi ...
So i will buy the item and change it with a mechanic friend.
It is necessary to change all ( 1+14+19+10) or just the broken number 10 ( i have always the old rear axle) ?


New rear axle :
253190



thank you
 
#53 ·
Finally a solution!

www.vps-eu.com

AUDI - R8 - COMPLETE CONTROL ARMS REBUILD | Vpseu

Complete control arms rebuild for Audi - R8. This renewal features 8x new ball joints, 16x new bushings, 8x abrasive blasting, 8x powder coating and assembling of control arms. You send the old parts in for a rebuild and we send you completely rebuilt assembly back. In this procedure all the...
www.vps-eu.com www.vps-eu.com
 
#54 ·
Since these front and rear control arms use the same numbers in the V8 and V10 versions, and since the letter "D" that distinguishes the V10 version is only stamped on the packaging and not on the actual control arm, does anyone have a photo of the OEM V8 front/ rear control arms next to the V10/ Updated control arms so that one can see the difference visually rather than guessing based on the numbers?

If there is another way to tell which are the OEM V8 lower control arms, I'd appreciate that too!

Cheers, Greg
 
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