18 12 546 Replacing center muffler (N73)

WARNING: This page is about a different car, the 2008 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 210

WARNING: Scalding hazard!

Only perform these tasks after exhaust system has cooled down.

Release screws.

Remove reinforcement plate.

Fig 1: Reinforcement Plate Mounting Screws

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Cutting lines (6) and (7) between front muffler (3) and rear muffler (1).

Determine pipe length on new center muffler.

Carry over dimensions to faulty center muffler (2) and mark cutting line.

Fig 2: Muffler Components And Assembly

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Cut tail pipe with special tool 00 2 210 at marked point.

Installation:

Deburr cutting lines.

Fig 3: Special Tool (00 2 210)

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Connect center muffler (2) to front muffler (3) and rear muffler (1).

Installation:

Align clamping sleeve so that:

Nuts point downwards.
Cutting line is in middle of clamping sleeve.
There is sufficient spacing to adjoining components.

Fig 4: Muffler Components And Assembly
Courtesy of BMW OF NORTH AMERICA, INC.

Add final details to vehicle.

Check exhaust system for leaks.