18 12 050 Replacing Center Muffler (N54)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 210 . See 00 2 210 EXHAUST PIPE CUTTER .
31 2 220 . See FRONT AXLE - SPECIAL TOOLS .

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

NOTE: If the cutting line is not marked by a punch mark in the pipe, determine the cutting line by means of the pipe length on the new center muffler.
Carry over cutting line to faulty center muffler and mark.

Fig 1: Identifying Cutting Lines On Rear Muffler

G06211038

Courtesy of BMW OF NORTH AMERICA, INC.

Support center muffler with special tool 31 2 220 and a suitable universal lifter. See Fig 2.

Fig 2: Supporting Exhaust System Using Special Tool 31 2 220

G04774161

Courtesy of BMW OF NORTH AMERICA, INC.

Secure center muffler against falling off.

Disconnect exhaust pipes at marked points with special tool 00 2 210 and deburr with a standard tool.

Remove center muffler.

Fig 3: Cutting Exhaust Pipe Using Special Tool 00 2 210

G05502250

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Adjust center muffler to fit and connect with clamps.

Center clamp and tighten down.

The procedure is identical on both sides.

Fig 4: Connecting Center Muffler To Rear Muffler Using Clamp

G04794086

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Adjust center muffler to fit so that both tail pipes (1) of rear muffler are centrally situated in openings in rear apron.

Fig 5: Identifying Tail Pipes Of Rear Muffler

G04794079

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check exhaust system for leaks.