18 12 551 Replacing front muffler (M54)

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2005 BMW 325xi, 2005 BMW 325i, 2005 BMW 325Ci, 2004 BMW 325xi, and 2004 BMW 325i. 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.

Fig 1: Marking Cutting Points

Courtesy of BMW OF NORTH AMERICA, INC.

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

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.
There is sufficient spacing to adjoining components.

Fig 2: Installing Clamping Sleeve

Courtesy of BMW OF NORTH AMERICA, INC.