w215 Quaife (QDF29B) LSD new production run @ 5 units of demand



Good news, We're good to go! Our total cost will be ~$1570, including shipping, shaft mod kit (I don't think I used mine last time, mine just went together with no machining... but results may vary), 2.5% US import, and credit card fee @ 2.8%. This INCLUDES the output shaft seals... Nice!
EU people, not sure how your import duties work, I think you have 20-30% VAT fees if I remember correctly.
Production lead time at quaife is 4 months from when we all submit payment.
Will post details on how to get in touch with Birds tomorrow!



You'll need to contact Bird's through their website's contact page, we have been requested to type "QDF29B Group Production" on their contact form's Comment Box, which is at the bottom (www.birdsauto.com/contact).
Once you do this, you'll be individually contacted with an invoice to be paid. I used credit card last time. They are producing a run of ten differentials as a result of our 5 orders, so if there are users lurking, you can probably get away with messaging them in the same manner as above.
Please post once you do this, so we can keep tabs on progress.
Fun fact- I just checked my previous invoice for my last w215 diff from Bird's, and the total was 1460 pounds (in 2022), whereas our current price is about 1270 pounds. Fantastic discount.
Quick note: the contact form does not have a "State" field, but it does have a "county" field. I've just put my state there.
Also, make sure you have your VIN #.
Last edited by JustTXn; Feb 27, 2025 at 07:16 PM.



Check your E-Mail inbox over the next few days! You will likely be asked what form of payment you prefer (wire or credit card), then sent an invoice to be paid. I went with credit card because I find wiring money annoying, especially internationally.
Let us know in the thread once you've paid!
The Best of Mercedes & AMG
Birds needs your payment so we can all move forward.
Please let us know if you’re still in.
thanks,
bzracer73
Last edited by bzracer73; Mar 21, 2025 at 09:53 PM.



Also, Thank You to Eemelicdi for crossposting on a couple other forums! Just googled the Quaife part number and noticed a couple threads on two other sites. Big thanks.
We're very close to our threshold, and I'm confident somebody will hop on board soon.
Also, Thank You to Eemelicdi for crossposting on a couple other forums! Just googled the Quaife part number and noticed a couple threads on two other sites. Big thanks.
We're very close to our threshold, and I'm confident somebody will hop on board soon.
Also, Thank You to Eemelicdi for crossposting on a couple other forums! Just googled the Quaife part number and noticed a couple threads on two other sites. Big thanks.
We're very close to our threshold, and I'm confident somebody will hop on board soon.
For me CL is summer car only and it starts to look like i need to watch the flashing yellow light this summer.
Last edited by Caleb Stallion; Apr 17, 2025 at 01:57 AM.






Bird's expects to receive units at the end of July, and they've cautioned US recipients of a potential 25-30% tariff. I don't personally mind... that's what, $400?



