18 12 030 Removing and installing/replacing rear muffler (N14)

WARNING: This page is about a different variant/trim than selected.

WARNING: Risk of burning!
This repair work may only be carried out on an exhaust system which has cooled down.

Disconnect exhaust pipe with suitable tool at marked point and deburr. The interfaces for the rear silencers are designated by notches in the pipe.

NOTE: If the separation point line is not marked by a punch mark in the pipe, determine the separation point by means of the pipe length on the new rear silencer. Carry over separation point to faulty rear silencer and mark. Secure rear silencer against falling off. Cut through exhaust pipes at marked point with a suitable tool.

Fig 1: Identifying Cutting Lines For Rear Mufflers

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts.

IMPORTANT: Risk of damage!
Secure exhaust pipe of rear muffler against falling down with assistance of a second person.

Fig 2: Locating Nuts (1)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Connect rear muffler to front muffler by means of a clamp.

Align rear muffler to rear apron.

Align clamp and tighten down.

Tightening torque 45 N.m

Fig 3: Identifying Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check exhaust system for leaks.