2001 BMW 525i 20 pin

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/Exhaust System Muffler, replacing
BMW offers individual mufflers as replacement parts for the
original one-piece assembly. Replacement of a rear muffler
may be possible with the system installed on the car. Re-
placement of the front or middle muffler should only be done
with the exhaust removed from the car.
< Mark length of new muffler pipe(s) on old system.
- Use exhaust pipe cutter to cut pipe(s). Deburr cut pipe
end@).
4 Use clamping sleeves to join new pipe(s) to old.
Make sure pipe ends are centered inside sleeve.
Point clamping sleeve bolt threads
(arrows) down.
- Reinstall exhaust system.

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- Removing left side exhaust manifolds (cylinder bank 5-8):
- Remove heat baffle plate on left side.
Remove oxygen sensor using
BMW special tool 11 7 030
or similar oxygen sensor socket.
Install
BMW special tools 00 0 200,OO 0 201,OO 0 202,OO 0
204, and 00 0 208 or other suitable engine lifting support
above engine and attach to lifting eye on left head.
NOTE-
The supports on special tool 00 0 208 must rest on the
screws on the fenders.
- Remove nut at top of engine support on left side
- Raise engine at front suspension lug a maximum of 25 mm
(I
.O in).
Release clamping bolt and nut
(arrow) and slide universal
joint off steering gear.
4 Remove nuts securing left exhaust manifold to head,
Raise front of manifold as high as possible past end posi-
tion of steering gear and feed out towards bottom.
- Installation is reverse of removal.
Coat exhaust mounting studs with CRC or equivalent
copper paste.
Use new exhaust gaskets and self-locking nuts.
Install new self-locking nuts on engine mount and steering
shaft bolt.

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Exhaust System
M52 engine
(5281 1997-1 998)
1. Exhaust manifolds
2. Sealing washer
3. Plug
4. Gasket (manifold to cylinder
head)
5. Clamping sleeve
6. Post-catalytic converter oxygen sensor
7. Pre-catalytic converter oxygen
sensor
8. Hanger
9. Rear muffler
10. Vibration dampener
11. Center support bracket
12. Clamping sleeve
13. Front pipe with catalytic
converters
14. Hanger
15. Center muffler
16. Gasket (front pipe to manifold)

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I Exhaust System
M52 TU and M54 engines
(528i 1999-2000
and 525i 2001-2003)
1. Transmission bracket
2. Center support bracket
3. Front muffler
4. Clamping sleeve
5. Vibration dampener
6. Hanger
7. Rear muffler
8. Hanger
9. Center muffler
10. Oxygen sensors, post-catalytic
converter
11. Oxygen sensors, pre-catalytic
converter
12. Exhaust manifoldlcatalytic
converter assemblies

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Exhaust systeml
M54 engine
(5301 2001-2003)
Clamping sleeve
Front muffler Rear muffler
Hanger
Vibration dampener
Clamping sleeve
Center muffler
Hanger
Gasket (front pipe to manifold)
10. Exhaust
manifold/catalytic
converter assemblies
11. Oxygen sensors, post-catalytic converter
12. Oxygen sensors, pre-catalytic converter

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I Exhaust System
M62 engine
(540i 1997-1 998)
1. Right side catalytic converters
2. Support bracket
3. Support bracket
4. Center muffler
5. Hanger
6. Rear muffler
7. Clamping sleeve
8. Oxygen sensors, post-catalytic
converter
9. Oxygen sensors, pre-catalytic
converter
10. Left side catalytic converter
11. Sealing rings
12. Left front exhaust manifold
13. Left rear exhaust manifold
14. Gasket
15. Exhaust manifold, right front
16. Exhaust manifold, right rear

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Exhaust systeml
M62 TU engine
(540i 1999-2003)
1. Oxygen sensors, pre-catalytic
converter
(2)
2.
Oxygen sensors, post-catalytic
converter
(2)
3.
Hanger
4. Rear muffler
5. Clamping sleeve
6. Hanger
7. Center muffler
8. Clamping sleeve
9. Catalytic converter, left side
10. Catalytic converter, right side
11. Exhaust manifoldlcatalytic
converter,
left side
12. Gasket (2)
13.
Gasket (2)
14.
Exhaust manifoldlcatalytic
converter, right side

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4 Tom T60 socket for V-8 flywheel bolt removal
(Tool No. 1 1 4 180)
4 Hose clamping tool
(Tool No. 13 3
01 0)
4 Clutch disc lining gauge
(Tool No. 21 2 080)
4 Clutch disc centering mandrels (non-SAC clutch)
(Tool No. 21 2
141,21 2 142,21 2 200,21 2 201)
4 Clutch disc alignment tools (SAC clutch)
(Tool No. 00 5 500 (handle). 21 2 130 (drift))
4 SAC tensioning tool
(Tool No. 21 2 170)
4 SAC locating ring
(Tool No. 21 2 180)