MagnaFlow GMC DIESEL DURAMAX, 4in. SYSTEM Aluminized Pro Series Diesel PERFORMANCE EXHAUST - Manual

Step 1: (Carefully read all instructions before
installation) To remove the OEM system, you will
need to cut the tailpipe 19 1/2" behind the DPF.
Disengage the welded tailpipe hangers from the
rubber insulators. Do not damage or discard the OEM
gasket, fasteners, or rubber insulators, as they will be
reused to mount the new system.
Step 2: Install the new tailpipe extension using the
supplied 4.00" clamps and by fitting the welded
hangers into the rubber insulators. Install the new
tailpipe using the supplied 4.00" clamps and by fitting
the welded hangers into the rubber insulators but
leave all clamps and fasteners loose for final
adjustment of the complete system.
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
18905
2014 Chevrolet 2500/3500 HD 6.6L
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
Oct 09, 2013
REV 000
TAILPIPE EXTENSION
[2] 4.00" CLAMP
TAILPIPE ASSY