MagnaFlow HUMMER TRUCK H3 Stainless Cat-Back System PERFORMANCE EXHAUST - Manual

Step 1: ( read all instructions before installation)
To remove the OEM exhaust system, unbolt the
OEM fasteners from the passenger side flange
location and loosen the factory clamp on the
drivers side band clamp. Do not damage or
discard the OEM flange fasteners and all rubber
insulators, as they will be re-used to mount the
new system. The OEM system can now be
removed by disengaging the welded hangers
from the rubber insulators.
Step 2: Begin installing the new exhaust system
using a front to rear method. Using a supplied
2.50"clamp install the Inlet Pipe to the driver's
side catalytic converter at the factory
attachment point. Next install the Inlet Pipe
Assembly at the flange location and into the
inlet pipe and then insert the welded hangers in
the OEM rubber insulators. Leave all clamps
and fasteners loose for final adjustment of the
complete system. Using a 3.00" clamp, install
the Muffler Assembly and insert the welded
hanger in the OEM rubber insulator. Install the
rear Tailpipe Assembly in a similar fashion
Step 3: With all components mounted loosely,
adjust the system for overall aesthetics and
clearance of frame & bodywork. (MAGNAFLOW
recommends at least 1/2" of clearance between
the exhaust system and any body panels to
prevent heat-related body damage or fire.)
Step 4: Once a final position has been chosen
for the new system, evenly tighten all fasteners
from front to rear. The supplied band clamps
must be VERY tight to properly align the pipes
and prevent leaks (Approximately 40ft-lbs).
U-bolt clamps should be tightened to
approximately 30-35ft-lbs. inspect all fasteners
after 25-50 miles of operation and retighten if
necessary.
Mufflers, Converters,
Systems and Tips
INSTALLATION INSTRUCTIONS
16592
2009 Hummer H3T 5.3L
Warning: When working on, under, or around
any vehicle exercise caution. Please allow the
vehicle's exhaust system to cool before removal,
as exhaust system temperatures may cause
severe burns. If working without a lift, always
consult vehicle manual for correct lifting
specifications. Always wear safety glasses and
ensure a safe work area. Serious injury or death
could occur if safety measures are not followed.
** Magnaflow Performance Exhaust recommends professional
installation on all their products
Magnaflow Performance Exhaust - 22961 Arroyo Vista Rancho Santa Margarita, CA 92688
Main #: 1-800-990-0905 Technical Support: 1-800-959-9226 ext 4500
11/23/10
Rev: 000
D/S INLET PIPE
INLET PIPE ASSY
MUFFLER ASSY
TAILPIPE ASSY
2.50" CLAMP
2.50" CLAMP
3.00" CLAMP
3.00' CLAMP