Owners manual
INS5403
140 Blaze Industrial Parkway, Berea, OH 44017 l P: 440.891.0999 F: 440.891.1868
8
10/1/2017
techsupport@tmgperformance.com l www.corsaperformance.com
2011-2014 FORD MUSTANG GT 5.0L V8
Long Tube Headers: 1.875” Primary, 3.0” Collector
Part #: 16016, 16116
REMOVAL INSTRUCTIONS
FACTORY MANIFOLD
20. Remove the engine mounts from both sides of
the engine using a 3/8” drive ratchet (3”
extension if needed), 13mm deep and shallow
sockets. One bolt on the passenger side is
“blind” and has a 15mm nut on it to secure a
ground strap to the stud. Save bolt and 15mm
nut for reinstallation (Install Step 7).
21. AUTO ONLY: Lower the engine within the vehicle to gain access to the passenger side front O2 sensor
connector on top of the transmission and disconnect the sensor. Raise engine when done.
22. Using a 12mm socket and 3/8” ratchet or
ratcheting wrench, remove 8 nuts on each side
securing the factory manifolds to the heads.
(Save nuts to return vehicle to stock).
WARNING: Take care when removing the
factory manifolds from the vehicle. The O2
sensors are still in place and can be easily
damaged. Remove both gaskets from the engine
head.
23. Remove the 8 studs on each side of the head
using the E8 Torx socket and ratchet. Save one
stud for Install Step 3. WARNING: Take care
when removing them as the heads are aluminum
and the studs are steel. One stud on the
passenger side in the front may require the use
of a 6mm ratcheting wrench to remove.
WARNING: This is not ideal as it could easily
round off the Torx pattern on the end of the stud.
We recommend a “jam nut” process. Thread
two nuts onto the stud with the flat flanges facing
each other. Loosen the stud by turning only the
nut closest to the head as it will lock/stop against
the nut near the end of the stud.
24. Remove the O2 sensors from the factory
manifolds and catalytic converters using an O2
sensor socket and ratchet or 22mm wrench.
PRO TIP: Label the location of each sensor so
they can be installed into the same location
within the CORSA Performance headers.
This concludes the removal of the factory
exhaust manifolds.