What about warranty?
What is the Quaife warranty?
The Quaife ATB Limited-Slip Differential comes with a limited lifetime guarantee.
If damage is caused to the Quaife through faulty installation or overheating, the warranty may be voided and repair costs charged.
Birds' Exchange Final Drives include an additional 24 months warranty on all other final drive components, such as bearings and seals, or if the car is new we will match your manufacturer's warranty.
Will it affect my manufacturer's warranty?
Given that the Quaife cannot cause issues with any other component outside of the final drive, your manufacturer's warranty is maintained. Your final drive would then be covered by the above Birds/Quaife warranty.
We have been directly responsible for the sale and/or installation of over 3,000 Quaife ATB differentials for BMWs and Mercedes worldwide, and not one of these has resulted in BMW or Mercedes claiming a fault or defect was a result of the Quaife installation.
Product reliability is of paramount importance to Birds. We will only offer products that have been fully tested and are guaranteed only to affect BMW ownership and driving pleasure in a truly positive way.