The front pipe is bolted to the exhaust manifold, which is attached to the cylinder head. All parts are bolted or welded together and can be replaced separately. Self-locking nuts and gaskets must be replaced after removal. Check retaining rings and rubber cushions for cracks, otherwise they must be replaced.
When installing a new exhaust system, it is recommended to also install new fasteners.
Figure W - 2623 Model 316i, 318i
Upper part of the drawing
1. Front exhaust pipe with catalytic converter
2. Gasket
4. Mounting bracket
6. Spacer washer
7. Exhaust pipe mounting bracket
8. Rubber support
9. Spring washer
12. Hinge bushing
13. Spacer washer
15. Mounting bar
17. Nut with boss
20. Lambda probe
21. Bracket
Middle part of the drawing
1. Final muffler
3. Nut
4. Rubber ring
5. Bolt
6. Exhaust pipe bracket
7. Nut with boss
8. Lower part of the bracket
9. Upper part of the bracket
10. Rubber support
Bottom of the drawing
1. Final muffler
2. Bolt
3. Nut
4. Exhaust pipe bracket
5. Bolt
6. Rubber ring
7. Rubber support
8. Fastening
9. Bracket
10. Nut with boss
Figure W - 2624 Model 320i
Upper part of the drawing
1. Front exhaust pipe with catalytic converter
2. Gasket
4. Mounting bracket
6. Exhaust pipe bracket
8. Hinge bushing
10. Spacer washer
11. Bracket
16. Mounting bracket
17. Rubber ring
20. Lambda probe
21. Bracket
Bottom of the drawing
1. Final muffler
5. Fastening
6. Bracket
7. Rubber support
Figure W - 2625 Model 325i
Upper part of the drawing
1. Front exhaust pipe with catalytic converter
2. Nut
3. Gasket
4. Mounting bracket
5. Spring washer
7. Muffler pipe support
9. Hinge bushing
10. Spacer washer
12. Bracket
17. Rubber ring
19. Mounting bracket
20. Flange
21. Gasket
22. Gasket
25. Lambda probe
26. Bracket
Bottom of the drawing
1. Final muffler
2. Rubber support
4. Fastening
5. Bracket