Specification Sheet

409S Stainless Steel
01/15/16
Removal:
1) Raise the vehicle up on a hoist or rack to working height. If you do not have access to a hoist
or rack, raise the vehicle and support securely with jack stands. Spray a penetrating lubricant onto all
of the rubber isolators that support the system.
2) Support the muffler and muffler inlet pipe with a stand. At
the front of the factory muffler, measure out 1.50” and make a
mark on the pipe. Using a hacksaw or sawsall, cut the inlet pipe
on this mark. Separate the wire hangers at the back of the
muffler and on the tailpipe from the rubber mounts on the vehicle.
Remove the muffler and tailpipe from the vehicle. Use a file or die
grinder to remove any burrs from the inlet pipe.
Installation:
1) Place the supplied 2-3/4” clamp over the slip-fit at the front
of the muffler assembly. Connect the two hangers on the
assembly to the rubber mounts on the vehicle, then slide the inlet
over the factory front pipe until the rubber mounts on the vehicle
are straight up and down. Be sure that the muffler is centered
between the rear mounts and tighten the front clamp securely.
Place the two supplied hanger keepers onto the ends of the
hangers and slide up to the rubber mounts to hold the mufflers
position. For a more secure installation, we highly recommend
welding the front slip-fit connection.
Page 1 Technical Support [phone]
Installation Instructions for:
SYSTEM #817706
2009-2013 CHEVROLET/GMC 1500 TRUCKS · (NON HD)
FITS: 09-13 MODELS WITH 5.3L ENGINE ONLY
CREW CAB & EXTENDED CAB MODELS ONLY
PACKING LIST
Qty Description Part #
1 Muffler Assembly 815430-418
1 Parts Kit PK817
1 2 3/4" Clamp MC234BS
2 7/16" Hanger Keepers HW502
815430-418