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Front catalytic converter, Z19DT

Front catalytic converter, Z19DT

To remove


1. Raise the car.

2. Remove the lower engine cover (A).


3. Remove the front exhaust pipe.

Remove the three nuts of the catalytic converter (A).


Remove the mounting on the gearbox (B).

Suspend the front exhaust pipe with a strap (C).

4. Remove the temperature sensor from the catalytic converter (A).


5. Remove the lower retaining bolts from the catalytic converter. Undo and bend down the mounting (B).

6. Remove the lower nuts (C) and bolt (D) of the heat shield.

7. Lower the car.

8. Remove the turbocharger delivery pipe.

Undo the hose clip (A).


Undo the hose clips (B).

Remove the turbocharger delivery pipe (C).

Plug the turbo.

9. Remove the screw holding the dipstick tube (D).

10. Remove the upper bolts of the heat shield (E).

11. Detach the heat shield and move it to the left.

12. Slacken the nut on the catalytic converter clamp (A).


13. Raise the car.

14. Move the catalytic converter rearwards toward the engine and remove the heat shield.

15. Hold the clamp open with circlip pliers or the like and lower the catalytic converter.


To fit


1. Clean the sealing surfaces.

2. Position the catalytic converter.

Raise up the catalytic converter and position it using a new gasket.

Hold the clamp open slightly with circlip pliers.

Turn the clamp so that the nut points down. Tighten the clamp finger-tight (A).


Move the catalytic converter back towards the engine.

3. Raise the heat shield.

4. Lower the car.

5. Fit the upper bolts of the heat shield (E).


6. Fit the dipstick (D).

7. Fit the turbocharger delivery pipe

Remove the plug from the turbo.

Fit the turbocharger delivery pipe (C).

Fit the hose clip (A).

Fit the hose clip (B).

8. Raise the car.

9. Fit the catalytic converter

Turn the catalytic converter back (B).

Bend back the mounting. Fasten the lower retaining bolts of the catalytic converter.

Tighten the clamp.

Tightening torque to cylinder head 20 Nm (15 lbf ft)

Fit the lower retaining bolts of the catalytic converter (B).


10. Fit the lower nuts (C) and bolt (D) of the heat shield.

11. Fit the temperature sensor to the catalytic converter (A).

12. Fit the front exhaust system.

Position the front exhaust pipe.

Remove the strap from around the front exhaust pipe (C).


Fit the mounting on the gearbox (B).

Fit the three nuts of the catalytic converter (A).

13. Fit the lower engine cover.


14. Lower the car.