18 12 551 Replacing front muffler (M54)

WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2006 BMW 330Ci, 2006 BMW 325Ci, 2005 BMW 330xi, 2005 BMW 330i, and 2005 BMW 330Ci. However, it is still accessible from the selected car via links, so may be relevant.

(exhaust system removed)

NOTE: For the following work steps, the illustrations of the exhaust system of a different BMW car have been used.

Carry over length of new front muffler to old front muffler and mark cutting points.

Cut through exhaust pipes at marked points between front and center mufflers and deburr.

Fig 1: Identifying Cutting Marked Points Between Front & Center Mufflers

Courtesy of BMW OF NORTH AMERICA, INC.

Connect new front muffler and center muffler by means of clamping sleeves.

Installation:

Nuts point downwards.

Align clamping sleeves so that:

cutting point is in middle of clamping sleeve, and
there is sufficient spacing to adjoining components

Fig 2: Locating Clamping Sleeve

Courtesy of BMW OF NORTH AMERICA, INC.