18 12 030 Removing and installing/replacing rear muffler (N54)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW 335xi, 2010 BMW 335i, 2009 BMW 335xi, 2009 BMW 335i, and 2008 BMW 335xi. 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.

NOTE: Illustrations show and descriptions refer to the left rear muffler.

The procedure is identical for the right filter side.

Support rear muffler with special tool 31 2 220.

Fig 1: Supporting Rear Muffler With Special Tool 31 2 220

G08419478

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Cutting lines for rear muffler (4) are designated by a notch in the pipe.

Fig 2: Identifying Exhaust Pipe With Catalytic Converter

G08419479

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Cutting Exhaust Pipes With Special Tool 00 2 210 At Marked Points And Deburr

G08419480

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten nut.

Tightening torque 18 00 2AZ .

Fig 4: Locating Nut

G08419481

Courtesy of BMW OF NORTH AMERICA, INC.

Pull off hose.

Release screw (1).

Tightening torque 18 20 4AZ .

Lower rear muffler (2) and remove.

Fig 5: Identifying Screw And Rear Muffler

G08419482

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Connect rear muffler to center muffler and right rear muffler by means of clamping sleeves.

Align rear muffler to rear apron.

Align clamp and tighten down.

Tightening torque 18 00 5AZ .

Fig 6: Aligning Rear Muffler To Rear Apron

G08419483

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check exhaust system for leaks.