Corsa 14864, 14864BLK Installation Manual

Exhaust System Installation

Cat Back Exhaust System
Dual Rear Exit w/ 4.5” Pro-Series Tips
2012-15 Subaru BRZ & Scion FR-S
PN 14864 and 14864BLK

Please take time to read and understand these installation instructions.

CORSA recommends that the installation of this system be performed by a qualified service center or professional
muffler installer who has the necessary equipment, tools and experienced personnel. However, if you decide to
perform this install, the use of a hoist and an additional person will be required.

CAUTION: Never work on a hot exhaust system. Allow time for the vehicle to cool. Always wear eye protection when
working under a vehicle.

Recommended Tools:

 3/8” drive ratchet
 3/8” drive 13mm deep socket
 3/8” drive 14mm shallow socket
 3/8” drive 15mm deep socket
 3/8” 4” ratchet extension
 Small pry bar or flathead screwdriver

 12mm wrench
 13mm wrench
 Grommet pullers
 Soap and water solution
 Torque Wrench
 Penetrating lubricant spray
 Safety glasses

Please confirm that all parts are present before beginning the factory exhaust system removal and CORSA exhaust
system installation.

Bill of Materials

1. 42BZ2000 – Tunnel Muffler Assembly

2. 42BZ2003 – Rear Muffler Assembly

3. 42BZ3000 – Driver Tip Assembly

4. 42BZ3001 – Passenger Tip Assembly

5. 42BZ4003 – Axle Pipe Assembly

6. 42BZ7006 – Hardware Kit

Exhaust System Installation
Cat Back Exhaust System
Dual Rear Exit w/ 4.5” Pro-Series Tips
2012-15 Subaru BRZ & Scion FR-S
PN 14864 and 14864BLK

Factory Exhaust System Removal:

1. Beginning at the flange connection of the catback, use the ratchet, 14mm socket, and 12mm wrench to remove

the two spring bolts. (Fig A) Support the catback with a jack stand or similar device.

2. Using grommet pullers or a similar device, remove the hanger from the rubber grommet near the rear

differential. (Fig B)

Note: The use of a soap and water solution may aid in the removal of hangers.

3. Using grommet pullers or a similar device, beginning on the driver’s side of the rear muffler, remove the two

muffler hangers from the rubber grommets. (Fig C) Support the driver’s side of the exhaust with a jack stand or
similar device as only the passenger’s side grommets on the rear muffler are supporting the exhaust.

4. Repeat Step #3 on the passenger’s side.

5. Carefully remove the factory exhaust from under the vehicle.

6. Using a small pry bar or similar device, remove the graphite donut gasket on the factory exhaust flange

upstream of the catback. This gasket is not reused during the Corsa exhaust installation. (Fig D)

Factory Exhaust Removal Pictures

Fig. A

Exhaust System Installation
Cat Back Exhaust System
Dual Rear Exit w/ 4.5” Pro-Series Tips
2012-15 Subaru BRZ & Scion FR-S
PN 14864 and 14864BLK

Fig. B

Fig. C

Fig. D