Quaife QDF15Z ATB Helical LSD Differential For Caterham Seven CSR260 R300 R400 etc Box opened to check contents and photograph but brand new never fitted. Bought to fit to a previous car I owned which didn't have a slippy diff. Current car already has one in so surplus to requirements. After £650 ideally collected (Rugby, CV21) but will post at cost. These are approx £800 from Quaife. https://shop.quaife.co.uk/shop/atb-differentials/differentials/quaife-ford-sierra-7-atb-differential-qdf15z/