Jeff210R Posted January 13, 2021 Share Posted January 13, 2021 My car has the BMW box. Does anyone know if the following fits or is it a different model?Quaife ATB differential: Ford Sierra 7" diff Caterham 7 spec (QDF15Z/23dg) QUALSD5/23Jeff Link to comment Share on other sites More sharing options...
David_Long Posted January 13, 2021 Share Posted January 13, 2021 The differential carries the bearings and crown wheel - they are different between the BMW and Ford. So no, it won't fit. Link to comment Share on other sites More sharing options...
K7 VCT Posted January 13, 2021 Share Posted January 13, 2021 Did u mean a Mazda gearbox ? No BMW ones , Ford or Mazda Link to comment Share on other sites More sharing options...
Jeff210R Posted January 15, 2021 Author Share Posted January 15, 2021 It's actually a BMW diff housing not gearbox. As a matter of interest how can I tell if I have a Ford or Mazda gearbox? Link to comment Share on other sites More sharing options...
oilyhands Posted January 15, 2021 Share Posted January 15, 2021 Quaife do an ATB for most BMW diffs, but the Sierra one wont fit.Oily Link to comment Share on other sites More sharing options...
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