Center Exhaust Pipe: Installation

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)

Fig 1: Locating Turbocharger Upper Stay Stud Bolts
Courtesy of SUBARU OF AMERICA, INC.
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.

Fig 2: Locating Turbocharger Upper Stay Nuts
Courtesy of SUBARU OF AMERICA, INC.

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.

Fig 3: Identifying Torque Wrench Effective Length

Courtesy of SUBARU OF AMERICA, INC.

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)

Fig 4: Locating Turbocharger Upper Stay Nuts
Courtesy of SUBARU OF AMERICA, INC.
Install the bolt which secures the turbocharger stay, and install the exhaust pipe cover (A) to the center exhaust pipe (front).
Tightening torque:

T1: 7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

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

Fig 5: Identifying Exhaust Pipe Cover Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the center exhaust pipe (rear) and temporarily tighten the bolt which holds center exhaust pipe (rear) to the hanger bracket.
- CVT model
  
  Fig 6: Locating Hanger Bracket Bolt - CVT Model
  Courtesy of SUBARU OF AMERICA, INC.
- MT model
  
  Fig 7: Locating Hanger Bracket Bolt - MT Model
  Courtesy of SUBARU OF AMERICA, INC.
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)

Fig 8: Locating Rear Exhaust Pipe Bolts
Courtesy of SUBARU OF AMERICA, INC.
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)

Fig 9: Locating Center Exhaust Pipe Nuts (Front)
Courtesy of SUBARU OF AMERICA, INC.
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
  
  Fig 10: Locating Center Exhaust Pipe Bolts (Rear) - CVT Model
  Courtesy of SUBARU OF AMERICA, INC.
- MT model
  
  Fig 11: Locating Center Exhaust Pipe Bolts (Rear) - MT Model
  Courtesy of SUBARU OF AMERICA, INC.
Lower the vehicle.
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)

Fig 12: Installing Exhaust Pipe Stay And Water Pump Pulley Cover
Courtesy of SUBARU OF AMERICA, INC.
Lift up the vehicle.
Connect the connector on the rear oxygen sensor to the engine harness, and connect the ground cable to the exhaust pipe cover.
Tightening torque:

7 N.m (0.7 kgf-m, 5.2 ft-lb)

Fig 13: Locating Rear Oxygen Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
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 harness.

Fig 14: Locating Front Oxygen (A/F) Sensor
Courtesy of SUBARU OF AMERICA, INC.
Install the under cover. <Ref. to INSTALLATION , Front Under Cover.>
Lower the vehicle.
Connect the ground terminal to battery sensor. <Ref. to BATTERY , NOTE, Note.>
Install the collector cover. <Ref. to INSTALLATION , Collector Cover.>