18 12 040 Removing and installing/replacing front muffler

WARNING: This page is about a different car, the 2010 BMW 650i, 2009 BMW 650i, 2008 BMW 650i, 2007 BMW 650i, and 2006 BMW 650i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 210
31 2 220

WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.

Support front muffler with lifter and special tool 31 2 220 and secure against falling out.

Fig 1: Identifying Special Tool (31 2 220)

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While installed, mark length (A) with aid of replacement muffler on faulty front muffler.

Fig 2: Identifying Front Muffler Length

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Cut both exhaust pipes with special tool 00 2 210 at marked points and deburr.

Fig 3: Identifying Special Tool (00 2 210)

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Release nuts on holder (1).

Unscrew nuts (2).

Remove primary muffler.

Fig 4: Identifying Nuts On Holder

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Connect new front muffler with central muffler using clamping sleeves.

Installation:

Nuts point downwards.

Align clamping sleeves so that:

Cutting line is in middle of clamping sleeve.

There is sufficient spacing to adjoining components.

Fig 5: Aligning Clamping Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.