BMW e36 Exhaust Bracket KIT Rear Muffler to Rubber Mount Set of 2 Kits Rear Muffler to Rubber Mount each Contains: (1) Upper Bracket (1) Lower Bracket (1) Bolt (2) Nuts Listing is for TWO kits, enough for the rear muffler. BMW part# 18 21 1 723 555, by HJS/LEISTRITZ. Please see FITMENT CHART below, under PRODUCT DESCRIPTION.