Center Exhaust Pipe: Installation

1. Set the center exhaust pipe (front) together with turbocharger upper stay (A), and install stud bolts (3 places) to the turbocharger by using the TORX® socket E10.
   NOTE: Use a new gasket.

   Tightening torque:

   14.7 N.m (1.5 kgf-m, 10.8 ft-lb)

   Courtesy of SUBARU OF AMERICA, INC.

2. Temporarily tighten the nuts (3 places) which secure the center exhaust pipe (front) to the turbocharger together with the turbocharger upper stay (A).
   NOTE: Use a new self-locking nut.

   Courtesy of SUBARU OF AMERICA, INC.

3. Using ST, install the nut (1 place) which secures the center exhaust pipe (front) to the turbocharger.
   NOTE: Use a new self-locking nut.

   ST 18283AA010 WRENCH ADAPTER

   Tightening torque:

   Calculation formula

   T = L/(120 mm (4.72 in) + L) x 42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

   T: Tightening torque

   L: Effective length of torque wrench

   NOTE: If the effective length of the torque wrench used is unknown, consult the manufacturer of the torque wrench.

   Courtesy of SUBARU OF AMERICA, INC.

   1. Effective length of the ST
   2. Effective length of the torque wrench
   3. Center of drive angle of the ST
   4. Center of drive angle of the torque wrench
   5. Center of the position where a force is applied by hand

   Courtesy of SUBARU OF AMERICA, INC.

4. Temporarily tighten the nuts (3 places) which secure the center exhaust pipe (front) to the turbocharger together with the turbocharger stay (A).

   Tightening torque:

   42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

   Courtesy of SUBARU OF AMERICA, INC.

5. Install the bolt which secures the turbocharger stay, and install the exhaust pipe cover (A) to the center exhaust pipe (front).

   Tightening torque:

   T1: 7.4 N.m (0.8 kgf-m, 5.4 ft-lb)

   T2: 33 N.m (3.4 kgf-m, 24.3 ft-lb)

   Courtesy of SUBARU OF AMERICA, INC.

6. Install the center exhaust pipe (rear) and temporarily tighten the bolt which holds center exhaust pipe (rear) to the hanger bracket.
   • CVT model

     Courtesy of SUBARU OF AMERICA, INC.

   • MT model

   Courtesy of SUBARU OF AMERICA, INC.

7. Install the bolts, springs, and nuts which secure the rear exhaust pipe to the center exhaust pipe (rear).
   NOTE: Use a new gasket.

   Tightening torque:

   18 N.m (1.8 kgf-m, 13.3 ft-lb)

   Courtesy of SUBARU OF AMERICA, INC.

8. Install the nuts which secure the center exhaust pipe (front) to the center exhaust pipe (rear).
   NOTE: Use a new gasket.

   Tightening torque:

   42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

   Courtesy of SUBARU OF AMERICA, INC.

9. Tighten the bolts which hold center exhaust pipe (rear) to the hanger bracket.

   Tightening torque:

   35 N.m (3.6 kgf-m, 25.8 ft-lb)

   • CVT model

     Courtesy of SUBARU OF AMERICA, INC.

   • MT model

   Courtesy of SUBARU OF AMERICA, INC.

10. Lower the vehicle.
11. Install the exhaust pipe stay (B) and water pump pulley cover (A) to the turbocharger stay and water pump, and install the bolts which secure the water pump pulley cover (A) and exhaust pipe stay (B) to the turbocharger stay.

    Tightening torque:

    T1: 19 N.m (1.9 kgf-m, 14.0 ft-lb)

    T2: 33 N.m (3.4 kgf-m, 24.3 ft-lb)

    Courtesy of SUBARU OF AMERICA, INC.

12. Lift up the vehicle.
13. Connect the connector on the rear oxygen sensor to the engine wiring harness, and connect the ground cable to the exhaust pipe cover.

    Tightening torque:

    7.4 N.m (0.8 kgf-m, 5.4 ft-lb)

    Courtesy of SUBARU OF AMERICA, INC.

14. Secure the front oxygen (A/F) sensor harness to the water pump pulley cover with the clip (A), and connect the front oxygen (A/F) sensor connector to the engine wiring harness.

    Courtesy of SUBARU OF AMERICA, INC.

15. Install the under cover. Refer to EXTERIOR/INTERIOR TRIM>FRONT UNDER COVER>INSTALLATION .
16. Lower the vehicle.
17. Connect the ground terminal to battery sensor. Refer to NOTE>NOTE>BATTERY .
18. Install the collector cover. Refer to INTAKE (INDUCTION) (EXCEPT FOR STI)>COLLECTOR COVER>INSTALLATION .

EXHAUST (EXCEPT FOR STI)> Center Exhaust Pipe