18 12 040 Removing and installing/replacing front muffler (N62)

WARNING: This page is about a different car, the 2005 BMW 745i, 2004 BMW 745i, 2003 BMW 745i, and 2002 BMW 745i. 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: Supporting Front Muffler

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Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Identifying Mark Length (A)

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Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Cutting Exhaust Pipes

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Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts on holder (1).

Fig 4: Unscrewing Nuts

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Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (2).

Remove primary muffler.

Connect new front muffler with central muffler using clamping sleeves.

Fig 5: Aligning Clamping Sleeves

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Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Nuts point downwards.

Align clamping sleeves so that:

Cutting line is in middle of clamping sleeve.

There is sufficient spacing to adjoining components.