This is an insert to fit into and fill the voids in the original bush, Para reemplazar el Silentblock original use la referencia PFF3-730BLK. A5 notes:- Para montar en A5 FWD Coupe 4 cylinder modelos or A5 Quattro 4 cylinder modelos up to 11/15, (use PFR3-735 for all other A5 models).