New SKF Timing Belt Tensioner Bearing. Genuine SKF Bearings. Auction is for a set of 4 x Bearings, 2 x Lock Nuts and 2 x Wave Spring Washers. Fits 2001 and earlier 851/888, 748/916/996 Desmoquattros. Does not fit Testa Bassa Drop Cam Motors on 2001+ 748/ST/Monster. Replaces Ducati Part Numbers 70250015A / 70250011A 70250014A 751833249, 74940081A , 85310021A.